Matthew 24:13 But he that shall endure unto the end, the same shall be saved.

"Once a person has been saved from this world, can he or she lose their salvation? Or, to put it another way, is salvation a “once and done” operation, or is it conditioned upon an abiding obedient relationship with Christ? When a person receives Christ, does he receive pre-forgiveness for every sin he may commit in the future—or does he receive forgiveness for past sins? Bercot explains what the early Christians believed about those questions.

It’s easy to pull proof-texts from the New Testament to supply a variety of answers to those questions. But what do we discover about a believer’s security when we look at every verse of the New Testament? The early Christians did that very thing. They looked at every New Testament passage, and they had a uniform understanding of what the New Testament teaches about eternal security. All believers owe it to themselves to know what the original, historic teaching of the church was on this vital subject."

John 8:44 - Ye are of [your] father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.