The “once saved always saved‘” (OSAS) mantra is not scriptural. Where does this idea come from?
“Once saved, always saved” or “Once Justified Always Justified” or unconditional eternal security, as it is understood today in certain Protestant denominations, was not understood that way in the early Church.
Security and predestination were understood.
They are written about in the Bible.
They are promises made by God.
We have an assurance from God.
Following God’s Word and God’s teaching, we can have that Blessed Assurance that we are safe in God’s hands.
But, although Calvin used the terms “elect,” “predestination,” and an “assurance of salvation” Calvin’s doctrine as taught by Calvin does not reflect Scripture.
Favourite verses used to “prove” the once saved always saved type of assurance of salvation are:
And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand.
Jesus mentions the word “elect” many times, for example in Matthew 13:22 “For false Christs and false prophets shall rise, and shall shew signs and wonders, to seduce, if it were possible, even the elect.“
But it is Paul that is their greatest inspiration, as in Romans 9:11: “For the children being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of him that calls.”
And Peter in 1 Peter 1:2, “Elect according to the foreknowledge of God the Father.“
Predestination is found in Romans 8:29-30, “For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren. Moreover whom he did predestinate, them he also called: and whom he called, them he also justified: and whom he justified, them he also glorified.“
And in Paul’s letter to the Ephesians 1:5, “Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will.”
The Modern Error
Millions of Christians who claim to follow Jesus and the Bible, and who sincerely believe in “Once Saved Always Saved,” are either weakened by this fraudulent error, or have a niggling doubt in their souls that they are really saved.