We have all read about the Divine attributes of God, but what about those of Jesus? When did he know he was Divine and how did he convey that to men? We see in Luke 2:49, when Jesus was only twelve, that He already knew that God was his Father when he declared to his mother and Joseph that he must be about his Father's business. So he knew that he was from God even before he performed his first miracle. How he knew is unknown, but probably by the Holy Spirit.
Since Jesus knew that he was Divine, how did he let people know? Our first clue is in Matthew 9:2 where he forgives a man's sins, which discreetly proclaimed himself to be God. In John 8:58 when Jesus said “before Abraham was, I AM” the Jews knew that he was proclaiming himself to be God and took up stones to stone him. Again in John 10:30 he declared that “I and my father are one” so they took up stones again to stone him. So we see that Jesus himself was indirectly declaring himself to be God in the flesh and applying divine names to himself.
Now let's look at the Divine names that others were applying to Him. In Acts 9:17 Ananias called Jesus “Lord”, which is a name for deity. In Luke 2:11 the angels called Jesus “Christ the Lord” right after his birth. This should put to rest the question as to when he became deity. Not only was he deity at his birth, he existed with the Father before the foundation of the world [John 17:24]. Jesus was also called the Word of God [John 1:1-2]. In Matthew 8:29, he is even called the Son of God by demons! They knew who He was even if the Pharisees were disputing that fact. In the Old Testament where Isaiah was writing about the coming child to be our savior, Isaiah was inspired to write in Isaiah 9:6 to call this child the Mighty God and the Everlasting Father. Many of the people who were ministered to by Jesus also called him Lord [Matthew 8:2; 8:6; John 9:28].
As the Son of God, Jesus did many divine works on earth before His crucifixion. In John 14:10-11 Jesus asked them to believe that he was in the Father by believing the works that he did. Some of these works included healing the sick and casting out devils [Matthew 8:3; 8:13; 8:15-16]; raising the dead [Matthew 9:25-26; Luke 7:14-15; John 11:43]; turning water into wine [John 2:3-10]; and feeding people [John 6:9-14]. In Hebrews 1:3 it declares that the worlds were made and upheld through the Son of God. And in Colossians 1:16-17 it says that all things were created through Jesus and for Him. This means that the worlds and even angels were created through Him. At the End of the Age when Jesus returns, He will speak to those in the graves and they will come forth [John 5:28-29].
Another aspect of the Divinity of Jesus is the fact that he received worship and yet the Bible says that he was without sin. This means that receiving worship by men was not sin since he was deity. He was worshiped by angels [Hebrews 1:6]; and by men [Matthew 8:2; 9:18; John 9:38]. In Revelation 5:13 it says that every creature on earth and in the sea do and will worship the Lamb. Even the Apostles prayed to Jesus in Acts 1:24 and Stephen asked Jesus to receive his spirit in Acts 7:59-60 when he was being stoned.
In addition to what I said earlier about being the “I AM” which defines his eternal existence, Jesus made other Divine claims for Himself. For instance, in John 5:25 and 11:4 he claimed to be the Son of God. This would mean that God was his father which means that he also was divine. He claimed that God was His Father but never Joseph [Luke 2:49, mentioned earlier; Mark 3:35]. Jesus also claimed that he was one with the Father, which, of course, would make Him part of the Godhead [John 10:30; 10:38]. And finally, he also claimed to show the love of the Father [John 14:8-9; 14:21-23; Romans 8:39].
Next we must speak more of the Divine relationship between Jesus and the Father. Even though the angels declared him to be divine from his birth [Matthew 1:23], Jesus himself knew by an early age, at least by 12, that he was divine, and began to speak of it from that point on, with his vocal declaration becoming more clear over time. From the time he declared that he must be about his Father's business in Luke 2:49 until he instructed the Apostles after His resurrection, he progressively revealed more about Himself, a good deal of which was after His resurrection. Before Jesus appeared, the Jews knew of only God the Father. After the resurrection and after Pentecost they learned the true nature of the Godhead, the triune God. This is exemplified in Matthew 28:19 where Jesus told his disciples to baptize people in the name of the Father and of the Son and of the Holy Spirit.
Jesus is truly God with us, just like it says in Matthew 1:23. And In John 1:14 it talks about Jesus being the only begotten of the Father. In Colossians 2:9 it states that in Jesus dwelt all the fullness of the Godhead. When we take the statements of Jesus and the elaboration in the Scriptures after His death, it is impossible to not understand and declare that Jesus is part of the Godhead. Otherwise many of the Scriptures would be wrong and Jesus sinned by declaring Himself to be God in many different ways, which, of course, is patently false. Jesus was comfortable in these declarations and showed it with many miraculous deeds, by forgiving sins, as well as fulfilling many prophecies concerning His coming to earth as the Savior of mankind.