because, if you confess with your mouth that Jesus is Lord [aka YHWH, YAHWEH, Jehovah in Hebrew] and believe in your heart that God raised him from the dead, you will be saved. Romans 10:9 ESV
It is Confession with the mouth that saves, not faith (belief). Romans 10:9
Therefore, I said to you that you will die in your sins. For if you do not believe that I AM, you will die in your sins. (John 8:24 LITV)
"I am the Al'pha and the O·me'ga," says Jehovah God, "the One who is and who was and who is coming, the Almighty." (Revelation 1:8 NWT)
The Jews answered him, For a good work we stone thee not, but for blasphemy; and because that thou, being a man, makest thyself God. (John 10:33 ASV)
And Moses said to God, Behold, I shall come to the sons of Israel and say to them, the God of your fathers has sent me to you; and they will say to me, What is His name? What shall I say to them? (Exodus 3:13 LITV)
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. (Exodus 3:14 ASV)
And God said moreover unto Moses, Thus shalt thou say unto the children of Israel, Jehovah, the God of your fathers, the God of Abraham, the God of Isaac, and the God of Jacob, hath sent me unto you: this is my name for ever, and this is my memorial unto all generations. (Exodus 3:15 ASV)