Encyclopedia of Mormonism, pg. 1315; “To escape the effects of sin, mankind must both accept the Atonement and repent. Amulek, a Book of Mormon prophet, explains that the Atonement saves men from their sins, not in them (Alma 11:37).”
Hebrews 8:12; “For I will be merciful to their unrighteousness, and their sins and their iniquities will I remember no more.”
God saves us when we’re not saved. If we had to wait to be saved until we didn’t sin, we’d never be saved.