Just because someone is Lord doesn't mean they are God. All rulers were called Lords. So Jesus is the Messiah, King and Lord and the Son of God.
But all that still doesn't mean he is God.
An in the pslam one Lord is the lesser. The LORD said to my Lord. No capitals for second Lord.
If that Someone is YHWH, then they are God.
Jesus Himself, as well as His Apostles, teach us Jesus is the Lord. The Lord God, YHWH, of the OLD TESTAMENT.
Confessing Him as the Lord, YHWH is how we obey the Gospel.
8 But what does it say? “The word is near you, in your mouth and in your heart” (that is, the word of faith which we preach): 9 that if you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved. 10 For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation. 11 For the Scripture says, “Whoever believes on Him will not be put to shame.” 12 For there is no distinction between Jew and Greek, for the same Lord over all is rich to all who call upon Him. 13 For “whoever calls on the name of the Lord shall be saved.”
Romans 10:8-13
For whoever
calls on the name of the Lord, is a direct quote from Joel and refers to YHWH. (Joel 2:32)
Jesus said it this way -
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
it and 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