Jesus the Word (Godkind), and Jesus the man (mankind).

To appreciate who and what Jesus is as the first and only begotten child of the Father (God), we must know the "nature" of the parents always determines the nature of their offspring. For example, zebras (animals) are born from zebras as animals, sparrows (birds) from sparrows as birds, perch (fish) from perch as fish, and people (humans) from people as humans. Being born of God means being born of the Spirit. Jesus was born a human child (mankind) and the Father's son (Spirit)!

Recall that man is body, soul, and spirit.

1. Jesus received His human body from His human parent, Mary His mother.
2. As a human, Jesus was born a living soul like all of us.
3. From the moment of conception, Jesus's spirit was different from ours. Jesus received His spirit (truth) from God as the "offspring" of the Father. Recall that the Father's Word is His servant as His offspring in the Spirit.

The Father placed His Word inside a human as the spirit (truth) of that human named Jesus.

• In the beginning was the Word, and the Word was with God, and the Word was God...And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth. John 1:1 and 1:14.

(Think of the phrase "the Word was made flesh" as the Word (Spirit) being given a flesh suit to dwell within because that which is born of the flesh is flesh and that which is born of the Spirit is spirit, see John 3:6.)

• Jesus was born of mankind (flesh) and Godkind (Holy Spirit) in one body.
• Jesus is both a son of God and a son of man, and only Jesus can declare that truth everywhere.

Using the peach as an example of man, the nut is the Word of God in the man Jesus and all who follow Him. Believing in Jesus as the savior gives the believer the power to become a son of God according to the Word like the power inside a seed that grows a great tree.

As the Father gives Himself, His Holy Spirit, Jesus gave Himself so we may become a child of God by that same Spirit according to the Father's will.

• But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name: John 1:12.
• But after that the kindness and love of God our Saviour toward man appeared, Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost;... Titus 3:3-7.

Jesus did many other things too numerous to mention.

• And there are also many other things which Jesus did, the which, if they should be written every one, I suppose that even the world itself could not contain the books that should be written. Amen. John 21:25.

No. There can be no faith in something that has already happened because it is a fact. Whatever happens, are facts to be believed.

For example, the death of Jesus on the cross and His resurrection unto life thereafter are well-documented events of human history! In fact, most of the original disciples, more than five hundred (500) miscellaneous people who knew Jesus, and Paul (the guy who authored almost 2/3 of the New Testament) all saw Him alive days after His lifeless body was taken off the cross He was nailed to and buried in a tomb. 

• For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures; And that he was buried, and that he rose again the third day according to the scriptures: And that he was seen of Cephas, then of the twelve: After that, he was seen of above five hundred brethren at once; of whom the greater part remain unto this present, but some are fallen asleep. After that, he was seen of James; then of all the apostles. And last of all he was seen of me also, as of one born out of due time. 1 Corinthians 15:3-8.  

The events of Jesus' death and resurrection are facts to be believed.

When we believe them and the promise of salvation Jesus gave us, we have the “power to become” God's sons (children) by faith. Faith is belief put into action, i.e., conduct (action) in reliance on the belief. Confessing (admitting) sin and repentance from sin are the first actions (conduct) of faith to be saved. Confession and repentance are required for salvation, to be born again of the Spirit.

The Bible is broken into two parts, the Old Testament (old covenant) and the New Testament (new covenant). Thus, the Word of God includes the Old Testament even though the New Testament is the current covenant.

In Old Testament times (before Jesus), the Jews were the people chosen to receive the Word of God. The Old Testament required an annual blood sacrifice to atone for the sins of the Jewish people as a nation. The Old Testament also spoke of Jesus as their Messiah, and the one who would set all people free from the penalty of sin and an eternal death in hell.

EVERYONE that is born again today is born of the Spirit under the new covenant, not the old. Thus, we study the New Testament first, knowing it is the current covenant. 

Yes. Everybody has sinned except Jesus. He literally lived by the Word of God because He IS the Word of God (i.e., God); it was in Him from the moment of conception in the womb without physical contact.

• Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us. Matthew 1:2

The Father placed Himself as the Word inside a human when He conceived His begotten son by the Holy Ghost. Jesus is "God with us," Emmanuel, the Messiah, because of the Word in Him.

The begotten son, Jesus, became the servant of the Father on earth. 

Remember, the Word of God is a statement of the Father's will for all mankind. Jesus is the person called the Messiah by the Jewish people from before His crucifixion, after it, always, and forever. As the Messiah, He is the highest priest. As the highest priest, He fulfilled the Word of God by the testimony of the Father.

Jesus, God inside the flesh.

In fulfilling the Jewish prophesies, Jesus gave Himself to the enemy knowing He was sinless. The enemy killed His body. In the process, He shed His blood before and from the cross to which He was nailed in hands and feet. His body died on the cross for the atonement of sin for everyone, not just the Jews.

When Jesus was raised from the dead, alive again, by the Holy Ghost (the Spirit of Truth), His life before and after His death proved the Word is true; the Word never dies or changes, and the Word is God. Now ask yourself, "What man in their right mind would ever change the Word of God to remove the references to the spirit of the Father Himself (the Spirit of Truth aka the Holy Ghost). 

Comment: Please understand that, as a man, the enemy tempted Jesus to sin because Jesus had flesh, but Jesus did not sin. In other words, Jesus was capable of sin as a human because He had flesh (and a will of the flesh in it), but He did not sin because He is the Word of God and believed in who He is/was. 

• For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin. Hebrew 4:15.

We must believe the Word to live forever. Remember, when we believe in Jesus and His Word, we get the power to become sons of God from Him, the only begotten son of God. Only Jesus can make that claim everywhere. He proved it with His life, death, and life again.

• For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord. Romans 6:23.
• For the law of the Spirit of life in Christ Jesus hath made me free from the law of sin and death. Romans 8:2.