God’s holiness is so far out of our league that even the best of our good deeds carries no weight in matters of salvation. The prophet proclaimed,
For all of us have become like one who is unclean, And all our righteous deeds are like a filthy garment. Isa 64:6
People who want to do away with eternal security based on the argument that a sinning Christian is so offensive to the holiness of God that he cannot be tolerated both elevate the works of man and depreciate the holiness of God. How? By introducing into the salvation model the necessity of good works to maintain one’s salvation.
From the book "Eternal Security"