For the first time in my entire memory, a few months ago, that is exactly what was taught at Sunday School. That Jesus is the God of the Old Testament. Which made me do a double take. Wait, What?! My Entire Life I was taught that Jesus was a Separate Person from God, that God is Heavenly Father, the Father of all Humanity. That when the Bible Talks about God it's the Same God in the Old Testament and the New Testament. But this totally contradicts that.
Logic, people, Logic, this has none. So when Jesus was a boy and Mary and Joseph lost track of him and found him at the Temple, and he said he was at His Father's House, what he Really meant was he was at HIS House. Since the Temple was built to worship the Old Testament God, and Jesus is that self same God. Right?!
And when he was an adult and went to the Temple and overturned the tables of the money changers in anger, that wasn't him being upset about how people were treating the sacred stuff of His Father, no, that was God Himself showing His Wrath, just in Human form.
Ah, but since I have been Taught my whole life that the God we worship today is Not Jesus, then we are worshiping an entirely New God, one not at all the same God as the Old Testament God. So when Jesus bled and stuff in the Garden of Gethsemane and prayed and begged "God" to take away the bitter cup, he wasn't praying to Himself, no, he was praying to the Higher God that He serves and wants us to worship and serve.
So the Old Testament God is Jehova, and the New Testament God is Yahweh. The two are Father and Son, very similar, but not the same person. Two Gods. The God of everything Before Jesus' Mortal birth and ministry, and the God of the stuff during and after that.
I feel like banging my head on a keyboard, every day, for the rest of my life.