John 3:34 For He whom God has sent speaks the words of God, for God does not give the Spirit by measure.
When we go through each of the prophets, kings and judges of the Old Testament, we find that most had a fairly clear start and end point in their lives where they received words from God.
But when we compare Jesus to any of them we find something very different; there is no end to the start and end of His ministry or His blessing.
Yes Jesus was most active in His last three years, but He continued after His death which was unique and before His birth, also unique.
Christ is unique. He is God!