God the Father
O Adonai, and leader of the House of Israel,
who appeared to Moses in the fire of the burning bush
and gave him the law on Sinai:
Come and redeem us with an outstretched arm.
Exodus iii, 14:
And God said unto Moses, I AM THAT I AM: and he said, Thus shalt thou say unto the children of Israel, I AM hath sent me unto you.
John, viii, 58:
Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am.
(For explanation, see here.)