1. During Jesus’ trial by the Sanhedrin as recorded in Mark 14, the high priest asks him, "Are you the Christ, the Son of the Blessed?" Jesus replies (v62), "I am, and you will see the Son of Man seated at the right hand of Power, and coming with the clouds of heaven." The high priest tore his garment, and the verdict of blasphemy with the death sentence was delivered by the Sanhedrin. They knew that Jesus was identifying himself as the Old Testament ‘Son of Man’ figure who appeared to Daniel in a vision (Daniel 7:13-14). Daniel’s ‘Son of Man’ is described as eternal, glorious and sovereign ruler of an everlasting kingdom. The Sanhedrin’s verdict of blasphemy demonstrates that they knew that Jesus was claiming to be God. Now, while ‘Son of Man’ was often used by Jesus to refer to himself in the gospels, it is very unlikely that this title was inserted as an invention of the Church, because the title only occurs three other times in the New Testament (Acts 7:56; Revelation 1:13; 14:14) and only three times in all other Christian literature during the Church's first 120 years. Since neither Jesus' opponents nor his supporters are likely sources for this title, Jesus himself is its most probable.
2. In Mark 13:32, talking about the end of the world, Jesus says, "no one knows, not even the angels in heaven, nor the Son, but only the Father." This text suggests that there is something that he, the Son of God, does not know. If the disciples were forming a fictional account, these are words they would never put in Jesus’ mouth. Again, Jesus himself is the most likely source of this statement.