berry posted:

Interesting you posted that.

Paul identified the "Rock" of the OT as Jesus Christ:

1 Corinthians 10:1-4---King James Version (KJV)
1 Moreover, brethren, I would not that ye should be ignorant, how that all our fathers were under the cloud, and all p***ed through the sea;
2 And were all baptized unto Moses in the cloud and in the sea;
3 And did all eat the same spiritual meat;
4 And did all drink the same spiritual drink: for they drank of that spiritual Rock that followed them: and that Rock was Christ.

Which means the God of the OT was Jesus Christ--and the One speaking in Isaiah.

So--how do you collate the OT theology--with the NT theology?

NOT a problem. As he posted to you. . . The Father is the ONE REAL GOD, Jesus is the ONE REAL GOD, and the Holy Spirit is the ONE REAL GOD. They are ONE GOD. You don't understand that because:

1 Cor 2:14-15
14 But the natural man does not receive the things of the Spirit of God, for they are foolishness to him; nor can he know them, because they are spiritually discerned.
NKJV

Because you are unsaved (your FRUITS tell us that) you cannot understand spiritual things; they are foolishness to you. That much is OBVIOUS.

1 Corinthians 8:6---King James Version (KJV)
6 But to us there is but one God, the Father, of whom are all things, and we in him; and one Lord Jesus Christ, by whom are all things, and we by him.

1 Timothy 2:5--King James Version (KJV)
5 For there is one God, and one mediator between God and men, the man Christ Jesus;

Ephesians 4:4-6--King James Version (KJV)
4 There is one body, and one Spirit, even as ye are called in one hope of your calling;
5 One Lord, one faith, one baptism,
6 One God and Father of all, who is above all, and through all, and in you all.

1 Peter 1:3--King James Version (KJV)
3 Blessed be the God and Father of our Lord Jesus Christ, which according to his abundant mercy hath begotten us again unto a lively hope by the resurrection of Jesus Christ from the dead,

John 17:3---King James Version (KJV)
3 And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent.

IOW--the NT writers separated out God the Son from the "one God" of the Biblical NT text--and testified this "one God" was the God and Father of Jesus Christ.

So--how do you collate the OT witness with the NT witness?

Already answered. Yes I know. . .you cannot understand. . .

The Father is God
Jesus is God
the Holy Ghost is God
and together
THEY ARE ONE GOD. The ONLY One God.

Never man-changed-into-godhood
NOT one of MANY gods
NOT the mormon god

Sorry berry, but you just fit the description of
1 Cor 2:14-15
14 But the natural man does not receive the things of the Spirit of God, for they are foolishness to him; nor can he know them, because they are spiritually discerned.
NKJV