To obtain SALVATION we must CONFESS with our mouth the Lord Jesus, and BELIEVE in our heart that God reaised him from the dead.
“For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. For God sent not his Son into the world to condemn the world; but that the world through him might be saved. He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God” (John 3:16-18).
When Jesus was asked by his disciples, “What shall we do, that we might work the works of God?” (John 6:28). “Jesus answered and said unto them, ‘This is the work of God, that ye [BELIEVE ON HIM WHOM HE HATH SENT]’” (John 6:29).
“[WHOSOEVER THEREFORE SHALL CONFESS ME BEFORE MEN, HIM WILL I CONFESS ALSO BEFORE MY FATHER WHICH IS IN HEAVEN]. But whosoever shall deny me before men, him will I also deny before my Father which is in heaven” (Matthew 10:31-33).
“[WHO IS HE THAT OVERCOMETH THE WORLD, BUT HE THAT BELIEVETH THAT JESUS IS THE SON OF GOD]? This is he that came by water and blood, even Jesus Christ; not by water only, but by water and blood. And it is the Spirit that beareth witness, because the Spirit is truth” (1 John 5:5–6).
“But what saith it? The word is nigh thee, even in thy mouth, and in thy heart: that is, the word of faith, which we preach; That if thou shalt [CONFESS WITH THY MOUTH THE LORD JESUS], and shalt [BELIEVE IN THINE HEART THAT GOD HATH RAISED HIM FROM THE DEAD, THOU SHALT BE SAVED]. For with [THE HEART MAN BELIEVETH UNTO RIGHTEOUSNESS]; and with [THE MOUTH CONFESSION IS MADE UNTO SALVATION]” (Romans 10:8-10).