Then said the Jews unto him, Thou art not yet fifty years old, and hast thou seen Abraham?
-- John 8:57
Now when all the people were baptized, it came to pass, that Jesus also being baptized, and praying, the heaven was opened, And the Holy Ghost descended in a bodily shape like a dove upon him, and a voice came from heaven, which said, Thou art my beloved Son; in thee I am well pleased. And Jesus himself began to be about thirty years of age, being (as was supposed) the son of Joseph, which was the son of Heli . . ..
-- Luke 3:21ff.