But that flies in the face of Romans 5:20, and 6:1,2, 1 Corinthians 6:9-11. I agree we sin, but we don’t live like the devil. David was saved when he slept with Bathsheba. When Nathan confronted him about it he repented of it, and it we never read of David committing adultery again.
From 1 John 3...
4 Everyone who practices sin also practices lawlessness; and sin is lawlessness. 5 You know that He appeared in order to take away sins; and in Him there is no sin. 6 No one who abides in Him sins; no one who sins has seen Him or knows Him. 7 Little children, make sure no one deceives you; the one who practices righteousness is righteous, just as He is righteous; 8 the one who practices sin is of the devil; for the devil has sinned from the beginning. The Son of God appeared for this purpose, to destroy the works of the devil. 9 No one who is born of God practices sin, because His seed abides in him; and he cannot sin, because he is born of God. 10 By this the children of God and the children of the devil are obvious: anyone who does not practice righteousness is not of God, nor the one who does not love his brother.
Christians sin, and sin daily. However, they do not practice sinning, live in sin. You are saying a child of God can live like the devil for extended periods of time, lose their time salvation, but not their eternal salvation. That is a foreign teaching and is not founded upon any scripture at all my friend.
The one who practices(lives) in sin is of the devil(vs 8).