Let no corrupt communication proceed out of your mouth.

 Yes. Our tongue (i.e., what we say) is an "unruly evil" at times.

• Behold, we put bits in the horses' mouths, that they may obey us; and we turn about their whole body. Behold also the ships, which though they be so great, and are driven of fierce winds, yet are they turned about with a very small helm, hithersoever the governor listeth. Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth! And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell. For every kind of beasts, and of birds, and of serpents, and of things in the sea, is tamed, and hath been tamed of mankind: But the tongue can no man tame; it is an unruly evil, full of deadly poison. James 3:1-8.

Therefore, speak words of faith and victory as they will define your path.

• Not that which goeth into the mouth defileth a man; but that which cometh out of the mouth, this defileth a man. Matthew 15:11.
• Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be. James 3:10.

Seeing the Son means recognizing Jesus as the Son of God in both the flesh and the Spirit. The important factor is to know that both are required, and even then God said "may" have everlasting life (see John 6:38 and 40, above). "May" becomes a certainty as "shall" when we act in faith on the belief on/in Him (see also John 3:16) that He is both the Son of Man(kind) in the flesh and the Son of God(kind) in the Spirit. 

• For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. John 3:16.

This is also where we are reminded that we must act in faith on our belief to attain eternal life as the ultimate prize.

• For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Ephesians 2:8.
• Therefore being justified by faith, we have peace with God through our Lord Jesus Christ: By whom also we have access by faith into this grace wherein we stand, and rejoice in hope of the glory of God. Romans 5:1-2.

Please understand that nobody can describe walking in the Spirit because it is lived. We are born again by the Spirit, and we cannot lean on our own understanding.

• If we live in the Spirit, let us also walk in the Spirit. Galatians 5:25.
• Trust in the Lord with all thine heart; and lean not unto thine own understanding. Proverbs 3:5.

The term "walking in the Spirit" simply means a continuous lifestyle of seeking and doing the will of the Father. Jesus said:

• If any man will do his will, he shall know of the doctrine, whether it be of God, or whether I speak of myself. John 7:17.

If we keep that in the forefront of our minds, knowing we have the mind of Christ through the Word, we will grow in the Spirit and do many mighty works for Him too. 

• For who hath known the mind of the Lord, that he may instruct him? but we have the mind of Christ. 1 Corinthians 2:16.

Thus, there is a struggle to ignore the will of the flesh and do the will of God.

• This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh. Galatians 5:16.

When we become born again, the time when we were disobedient is past.

• Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience: Ephesians 2:2.

Have you engaged in something that the Spirit wants you to stop? We must not ignore the second (underlined) part of the verse.

• There is therefore now no condemnation to them which are in Christ Jesus, who walk not after the flesh, but after the Spirit. Romans 8:1.

Whenever we choose to serve the will of the flesh and "walk in the flesh" instead of the Spirit, our conscience will condemn us. 

Condemnation is what we find in this world and from the god of it, the enemy that is condemned. Therefore, do not let the enemy lie to you. Know that you, the brethren, are not condemned but reminded of grace.

• But when we are judged, we are chastened of the Lord, that we should not be condemned with the world. 1 Corinthians 11:32.
• And ye have forgotten the exhortation which speaketh unto you as unto children, My son, despise not thou the chastening of the Lord, nor faint when thou art rebuked of him: For whom the Lord loveth he chasteneth, and scourgeth every son whom he receiveth. If ye endure chastening, God dealeth with you as with sons; for what son is he whom the father chasteneth not? Hebrews 12:5-6.
• As many as I love, I rebuke and chasten: be zealous therefore, and repent. Revelation 3:9.

Yes. Before Jesus surrendered Himself to die on the cross, He prayed to the Father about our oneness with Him and with the Father through Him.

John Chapter 17: 

• These words spake Jesus, and lifted up his eyes to heaven, and said, Father, the hour is come; glorify thy Son, that thy Son also may glorify thee: As thou hast given him power over all flesh, that he should give eternal life to as many as thou hast given him. And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent. I have glorified thee on the earth: I have finished the work which thou gavest me to do. And now, O Father, glorify thou me with thine own self with the glory which I had with thee before the world was. I have manifested thy name unto the men which thou gavest me out of the world: thine they were, and thou gavest them me; and they have kept thy word. Now they have known that all things whatsoever thou hast given me are of thee. For I have given unto them the words which thou gavest me; and they have received them, and have known surely that I came out from thee, and they have believed that thou didst send me. I pray for them: I pray not for the world, but for them which thou hast given me; for they are thine. And all mine are thine, and thine are mine; and I am glorified in them. And now I am no more in the world, but these are in the world, and I come to thee. Holy Father, keep through thine own name those whom thou hast given me, that they may be one, as we are. While I was with them in the world, I kept them in thy name: those that thou gavest me I have kept, and none of them is lost, but the son of perdition; that the scripture might be fulfilled. And now come I to thee; and these things I speak in the world, that they might have my joy fulfilled in themselves. I have given them thy word; and the world hath hated them, because they are not of the world, even as I am not of the world. I pray not that thou shouldest take them out of the world, but that thou shouldest keep them from the evil. They are not of the world, even as I am not of the world. Sanctify them through thy truth: thy word is truth. As thou hast sent me into the world, even so have I also sent them into the world. And for their sakes I sanctify myself, that they also might be sanctified through the truth. Neither pray I for these alone, but for them also which shall believe on me through their word; That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me. And the glory which thou gavest me I have given them; that they may be one, even as we are one: I in them, and thou in me, that they may be made perfect in one; and that the world may know that thou hast sent me, and hast loved them, as thou hast loved me. Father, I will that they also, whom thou hast given me, be with me where I am;  that they may behold my glory, which thou hast given me: for thou lovedst me before the foundation of the world. O righteous Father, the world hath not known thee: but I have known thee, and these have known that thou hast sent me. And I have declared unto them thy name, and will declare it: that the love wherewith thou hast loved me may be in them, and I in them.

Now that Jesus lives in heaven, the Holy Ghost from the Father is the answer to Jesus's prayer (John, Chapter 17 below).

• But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you. John 14:26.

Yes. Jesus said:

A certain man had two sons: And the younger of them said to his father, Father, give me the portion of goods that falleth to me. And he divided unto them his living. And not many days after the younger son gathered all together, and took his journey into a far country, and there wasted his substance with riotous living. And when he had spent all, there arose a mighty famine in that land; and he began to be in want. And he went and joined himself to a citizen of that country; and he sent him into his fields to feed swine. And he would fain have filled his belly with the husks that the swine did eat: and no man gave unto him.

And when he came to himself, he said, How many hired servants of my father's have bread enough and to spare, and I perish with hunger! I will arise and go to my father, and will say unto him, Father, I have sinned against heaven, and before thee, And am no more worthy to be called thy son: make me as one of thy hired servants. 

And he arose, and came to his father. 

But when he was yet a great way off, his father saw him, and had compassion, and ran, and fell on his neck, and kissed him. And the son said unto him, Father, I have sinned against heaven, and in thy sight, and am no more worthy to be called thy son. But the father said to his servants, Bring forth the best robe, and put it on him; and put a ring on his hand, and shoes on his feet: And bring hither the fatted calf, and kill it; and let us eat, and be merry: For this my son was dead, and is alive again; he was lost, and is found.

And they began to be merry. Now his elder son was in the field: and as he came and drew nigh to the house, he heard musick and dancing. And he called one of the servants, and asked what these things meant. And he said unto him, Thy brother is come; and thy father hath killed the fatted calf, because he hath received him safe and sound. 

And he was angry, and would not go in: therefore came his father out, and intreated him. And he answering said to his father, Lo, these many years do I serve thee, neither transgressed I at any time thy commandment: and yet thou never gavest me a kid, that I might make merry with my friends: But as soon as this thy son was come, which hath devoured thy living with harlots, thou hast killed for him the fatted calf. 

And he said unto him, Son, thou art ever with me, and all that I have is thine. It was meet that we should make merry, and be glad: for this thy brother was dead, and is alive again; and was lost, and is found.