The NT writers clearly believed that the Lord Jesus Christ was the incarnation of YAHWEH.
YAHWEH
"Abraham planted a tamarisk tree in Beersheba and called there on the name of Yahweh, the Everlasting God." Genesis 21:33
"Into your hand I commit my spirit; you have redeemed me, O Yahweh, faithful God." Psalm 31:5
"And it shall come to pass that everyone who calls on the name of Yahweh shall be saved. For in Mount Zion and in Jerusalem there shall be those who escape, as Yahweh has said, and among the survivors shall be those whom Yahweh calls." Joel 2:32
JESUS
"And as they were stoning Stephen, he called out, ‘Lord Jesus, receive my spirit.’ And falling to his knees he cried out with a loud voice, ‘Lord, do not hold this sin against them.’ And when he had said this, he fell asleep.’" Acts 7:59-60
"Now there was a disciple at Damascus named Ananias. The Lord said to him in a vision, ‘Ananias.’ And he said, ‘Here I am, Lord.’ And the Lord said to him, ‘Rise and go to the street called Straight, and at the house of Judas look for a man of Tarsus named Saul, for behold, he is praying, and he has seen in a vision a man named Ananias come in and lay his hands on him so that he might regain his sight.’ But Ananias answered, ‘Lord, I have heard from many about this man, how much evil he has done to your saints at Jerusalem. And here he has authority from the chief priests to bind all who call on your name’ ... So Ananias departed and entered the house. And laying his hands on him he said, ‘Brother Saul, the Lord Jesus who appeared to you on the road by which you came has sent me so that you may regain your sight and be filled with the Holy Spirit’… And all who heard him were amazed and said, ‘Is not this the man who made havoc in Jerusalem of those who called upon this name? And has he not come here for this purpose, to bring them bound before the chief priests?’" Acts 9:10-14, 17, 21
"because, if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved. For with the heart one believes and is justified, and with the mouth one confesses and is saved. For the Scripture says, ‘Everyone who believes in him will not be put to shame.’ For there is no distinction between Jew and Greek; the same Lord is Lord of all, bestowing his riches on all who call on him. For ‘everyone who calls on the name of the Lord will be saved.’" Romans 10:9-13
"To the church of God that is in Corinth, to those sanctified in Christ Jesus, called to be saints together with all those who in every place call upon the name of our Lord Jesus Christ, both their Lord and ours:" 1 Corinthians 1:2