Romans 10:9
If you declare with your mouth, “Jesus is Yahweh,” and believe in your heart that God raised him from the dead, you will be saved.
Matthew 23:39
For I tell you, you will not see me again until you say, ‘Blessed is he who comes in the name of the Lord.'”
For all have sinned and fallen short of the glory of God.
Amen! The Text of Joel 2: 32, quoted by Saul/Paul in Romans 10: 13, and looking back to Romans 10:9 is “Yahweh”, ‘I am that I am!’ (John 8: 58)… The Eternal One! See also 1 Cor. 8: 6, (Deut. 6: 4). The One in Three and the Three in One, as the NT revelation, GOD, Triune! (Matt. 2: 19), the “Name”, singular: “in the of the Father and the Son and of the Holy Spirit.”
That if thou shalt confess with thy mouth the Lord Jesus…… KJV. Different meaning to what you are saying Jim. What version are you using?