True Christians are disciples.

The first elements of faith that bring salvation to each of us are belief in Christ and the cross for forgiveness of sin, and repentance! 

• I tell you, Nay: but, except ye repent, ye shall all likewise perish. Luke 13:5.

Knowing the will of God is a great thing, doing the will of God is more difficult. We all make mistakes because the worldly sinful will of the flesh overtakes us at times. Always live penitently. 

• For that which I do I allow not: for what I would, that do I not; but what I hate, that do I. If then I do that which I would not, I consent unto the law that it is good. Now then it is no more I that do it, but sin that dwelleth in me. Romans 7:15-17.

Remember, we, the born again by the Spirit unto righteousness through repentance, barely make it into heaven.

• I came not to call the righteous, but sinners to repentance. Luke 5:32; see also, Matthew 9:13 and Mark 2:17.
• And if the righteous scarcely be saved, where shall the ungodly and the sinner appear? 1 Peter 4:18.

Yes. All of us who are born again of the Spirit (the saved) are supposed to be loving as God is love, but if trying to save someone from death with the truth would offend their feelings should we let them die? Is that loving? God doesn't think so.

He knows us when His spirit lives in us.

• ...Now if any man have not the Spirit of Christ, he is none of his. And if Christ be in you, the body is dead because of sin; but the Spirit is life because of righteousness. Romans 8:9-10.

Recall, the spirit (truth) of Jesus the Christ is the Word of God.

• Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him. John 14:23.

Recall, the spirit (truth) of the Father is the Holy Ghost (the Spirit of Truth) that also dwells in us. The Holy Ghost (Spirit of Truth) bears witness to the Word by reminding us what Jesus (the Word) said (says), teaching us all things, and quickening our mortal bodies such that nothing by any means should harm us as we are about the Father's will.