When did Jesus know he was the Son of God? Given that he is sinless how was he sinless as a child growing up?
John 10:31-39 “Then the Jews took up stones again to stone Him.32 Jesus answered them, “Many good works I have shown you from My Father. For which of those works do you stone Me?”
33 The Jews answered Him, saying, “For a good work we do not stone You, but for blasphemy, and because You, being a Man, make Yourself God.”
34 Jesus answered them, “Is it not written in your law, ‘I said, “You are gods”’?35 If He called them gods, to whom the word of God came (and the Scripture cannot be broken),36 do you say of Him whom the Father sanctified and sent into the world, ‘You are blaspheming,’ because I said, ‘I am the Son of God’?37 If I do not do the works of My Father, do not believe Me;38 but if I do, though you do not believe Me, believe the works, that you may know and believe that the Father is in Me, and I in Him.”39 Therefore they sought again to seize Him, but He escaped out of their hand.”
Jesus preceeds from the Father, He calls God His Father and the Jews understood that to mean that He was God.
John 8:42 “Jesus said to them, “If God were your Father, you would love Me, for I proceeded forth and came from God; nor have I come of Myself, but He sent Me.”
Jesus was never born or was in the mind of God, because He is God, another example of the phrase, "son(s) of" to show that the person being called, "son(s) of" because they were of the same nature or had the same attributes. We can read in the OT in II King 2:3, 5
“And the sons of the prophets who were in Bethel came out to Elisha and said to him, “Do you know that today the Lord will take away your master from over you?” And he said, “Yes, I know it; keep quiet....5 The sons of the prophets who were at Jericho drew near to Elisha and said to him, “Do you know that today the Lord will take away your master from over you?” And he answered, “Yes, I know it; keep quiet....7 Fifty men of the sons of the prophets also went and stood at some distance from them, as they both were standing by the Jordan....15 Now when the sons of the prophets who were at Jericho saw him opposite them, they said, “The spirit of Elijah rests on Elisha.” And they came to meet him and bowed to the ground before him.”
These guys were not the physical sons of a prophet, but they were prophets or the were of the same nature, having the same attributes of a prophet because they were prophets. Just like Jesus is the Son of God because He has the same nature, has the same attributes as the Father and He precedes from God the Father, that is why Jesus is the Son of God not because He had a christ awakening or became the Son of God at His baptism, He has always been God and will always be God.
The Father is not the Father because He begat Jesus, the Father did create a body for Jesus, but that did not make Him the Father. The phrase "Father of" means "originator or origin" it is again not because He created or made a body of Jesus, because Jesus is called the father as well, in Isaiah 9:6
“For to us a child is born, to us a son is given; and the government shall be upon his shoulder, and his name shall be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace.”
Jesus is the Everlasting Father because of His creation of the heavens and the earth, with that said. Jesus never became God or became where that He was the Son of God, He always was and is and is to come. He had no beginning and has no end, He is in His resurrection body now and for ever, that is why John says in I John 4:2-3
“By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God,3 and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you heard was coming and now is in the world already.”
Believing that Jesus has come in the flesh is part of saving faith, this is in the present tense, so it also means that He is still in His flesh or body, this is why Paul said in I Corinthians 12:3
“Therefore I want you to understand that no one speaking in the Spirit of God ever says “Jesus is accursed!” and no one can say “Jesus is Lord” except in the Holy Spirit.”
This is not talking about sampling saying, Jesus is Lord, it is the same confession that Peter had in Matthew 16:16
“Simon Peter answered and said, “You are the Christ, the Son of the living God.”
You can only confess this by the awaking of the Spirit of God or Him causing you to see the kingdom of God.