God is Life and Jesus is Life. God is Eternal Life. And Jesus is Eternal Life. And those who receive Christ receive eternal life. That is how simple it is, and totally biblical.
Jesus said unto her, I am The Resurrection, and The Life: he that believeth in me, though he were dead, yet shall he live: And whosoever liveth and believeth in me shall never die. Believest thou this? (John 11:25,26).
That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, of The Word of Life; For The Life was manifested, and we have seen it, and bear witness, and shew unto you That Eternal Life, which was with the Father, and was manifested unto us... (1 John 1:1,2)
Note: All those words should have been capitalized since they speak of God the Word, the Lord Jesus Christ.
So if anyone teaches that Eternal Life is earned, or merited, or deserved, he or she is a false teacher. The matter of surrender and obedience to God and Christ is a separate issue.