There is overwhelming evidence in Scripture showing that Jesus claimed to be the Son of God. It would be far too much to comment upon in detail here. Suffice it to say that certain of the Jews regarded His claim as blasphemous (Mark 14:60-65 John 10:36). They said He was claiming to be God (John 5:18, 10:3033). It was this claim of Sonship that He was challenged with at His trial (Matthew 26:63, Luke 22:70). The Jews said His claims made Him worthy of death (Mark 14:64, John 19:7, see also John 8:56-59). Jesus was mocked for claiming to be the Son of God (Matthew 27:40-43). It was on this point of Sonship with God that Satan challenged Christ in the wilderness (Matthew 4:3-6, Luke 4:3-9). Peter, when confessing Christ to be ―the Son of the living God (Matthew 16:16), was told by Jesus that it had not been ―flesh and blood that had revealed this to him but His Father in Heaven (Matthew 16:17). Jesus said very clearly that He was the Son of God (Matthew 16:16-17, John 3:16, 5:25-26, 9:35, 10:36, 11:4, 19:7). At His trial he claimed to be the Son of God (Matthew 26:64, Mark 14:62, Luke 22:70-71). It was this claim that brought about the sentence of death against Him (Mark 14:64, John 19:7).
The demons also addressed Jesus as the Son of God (Matthew 8:29, Mark 3:11, 5:7, Luke 4:41). The man in the tombs possessed of a devil also called Christ the Son of God (Luke 8:27-29). The Roman centurion said he believed that Christ was the Son of God (Mark 15:39). The disciples confessed Christ to be the Son of God (Matthew 14:33, 16:16, John 1:49, 11:27). Philip (the evangelist) explained to the Ethiopian eunuch that Christ was the Son of God (Acts 8:37). The first thing Paul taught after his 'blindness' was that Christ is the Son of God (Acts 9:20). Paul‘s continuing theme was that God had sent His Son into the world to die (Romans 1:4, 8:3, 32, 2 Corinthians 1:19, Galatians 2:20, Ephesians 4:13 etc.). Not surprisingly, John's little letters, as does the book of Hebrews, constantly refer to Christ as the Son of God (1 John 3:8, 4:15, 5:5, 5:10, 5:12-13, 5:20, Hebrews 4:14, 6:6, 7:3, 10:29). That Christ is the Son of God was also the testimony of John the Baptist (John 1:32-34) – and so the list goes on. Some say that Christ is a son only because of the virgin birth at Bethlehem, but if this were true, then John, when writing his Gospel (to show that Jesus was the Christ, the Son of God), made a serious mistake. This is because he did not even mention the birth of Jesus or the events of Bethlehem. The only thing in this respect he did say was that the Word was made flesh (John 1:14). This must be the briefest of references to Christ‘s incarnation that it is possible to make. If John had wanted to show that the only reason why Christ was called the Son of God was because of the virgin birth then surely he would have at least mentioned where the angel Gabriel visited Mary saying that the child she was going to bear would be called the Son of God (Luke 1:35). As it was he did not even mention it. The prime reason therefore for Christ being called the Son of God cannot be His birth at Bethlehem. There must be another reason. The ―signs‖ that John gave were signs of Christ‘s divinity. Under the inspiration of the Holy Spirit he was led of God to show that Christ was the divine Son of God. This can clearly be seen in his opening words: ―In the beginning was the Word, and the Word was with God, and the Word was God.‖ John 1:1 In order to fulfil the purpose in writing his Gospel (that Jesus was the Christ, the Son of God), the very first thing that the Holy Spirit led John to write was that Christ, in His pre-existence, ―was God‖. From the outset therefore, John was saying to his readers that there are two divine personages who are both rightly termed God (Gr. Theos). This was the opening thrust of his Gospel. John then proceeded to reinforce his opening words. He did this by saying that all things were made by the Word and without him was not any thing made that was made (John 1:3). Christ therefore, says John, is our Creator. This is the highest possible claim to divinity. Only divinity is not created.