Fair question.
Jesus Himself claimed to be YHWH, the Lord God.
54 Jesus answered, “If I honor Myself, My honor is nothing. It is My Father who honors Me, of whom you say that He is your[
m] God. 55 Yet you have not known Him, but I know Him. And if I say, ‘I do not know Him,’ I shall be a liar like you; but I do know Him and keep His word.56 Your father Abraham rejoiced to see My day, and he saw
itand was glad.”
57 Then the Jews said to Him, “You are not yet fifty years old, and have You seen Abraham?”
58 Jesus said to them, “Most assuredly, I say to you,
before Abraham was, I AM.”
59 Then they took up stones to throw at Him; but Jesus hid Himself and went out of the temple, going through the midst of them, and so passed by.
John 8:54-59
again
8 “I am the Alpha and the Omega,
the Beginning and
the End,” says the Lord, “who is and who was and who is to come, the Almighty.”
Revelation 1:8
and again
12 “And behold, I am coming quickly, and My reward
is with Me, to give to every one according to his work. 13 I am the Alpha and the Omega,
the Beginning and
the End, the First and the Last.”
Revelation 22:12-13
Peter says it this way -
Simon Peter, a bondservant and apostle of Jesus Christ,
To those who have obtained like precious faith with us by the righteousness of our God and Savior Jesus Christ:
2 Peter 1:1
again
10 Of this salvation the prophets have inquired and searched carefully, who prophesied of the grace
that would come to you, 11 searching what, or what manner of time, the Spirit of Christ who was in them was indicating when He testified beforehand the sufferings of Christ and the glories that would follow.
1 Peter 1:10-11
Peter teaches us, it was the Spirit of Christ in the Old Testament prophets.
Example:
The burden of the word of the Lord against Israel. Thus says the Lord, who stretches out the heavens, lays the foundation of the earth, and forms the spirit of man within him:
Zechariah 12:1
Christ Jesus is YHWH the Lord God.
Paul -
looking for the blessed hope and glorious appearing of our great God and Savior Jesus Christ,
Titus 2:13
again
16 And without controversy great is the mystery of godliness:
God was manifested in the flesh,
Justified in the Spirit,
Seen by angels,
Preached among the Gentiles,
Believed on in the world,
Received up in glory.
1 Timothy 3:16
JLB