Romans 10:9 that if you confess with your mouth Jesus as Lord, and believe in your heart that God raised Him from the dead, you will be saved;

1 John 2:23 Whoever denies the Son does not have the Father; the one who confesses the Son has the Father also.

1 John 2:24 As for you, let that abide in you which you heard from the beginning. If what you heard from the beginning abides in you, you also will abide in the Son and in the Father.

1 John 3:23 This is His commandment, that we believe in the name of His Son Jesus Christ, and love one another, just as He commanded us.

1 John 3:24 The one who keeps His commandments abides in Him, and He in him. We know by this that He abides in us, by the Spirit whom He has given us.

1 John 4:2 By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God;

1 John 5:1 Whoever believes that Jesus is the Christ is born of God, and whoever loves the Father loves the child born of Him.

1 John 5:5 Who is the one who overcomes the world, but he who believes that Jesus is the Son of God? (NASB ©1995)