yes shain, w all should have some scripture committed to memory. if nothing else, simply because you have heard it repeatedly. 50... well, i don't know if i could. i'm working on memorizing romans 8 [all of it] and portions of acts 2. will, your question is difficult for me to answer, because i don,t believe in backsliding. at least not when it comes to sinning. i used to be a sinner and i still am. how can i backslide. backslide from faith, it's not something i've even considered. why backslide from freedom.

Gal 2:16 Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ, that we might be justified by the faith of Christ, and not by the works of the law: for by the works of the law shall no flesh be justified.

Jas 2:24
Ye see then how that by works a man is justified, and not by faith only.