“If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness” (1 John 1:9).  In context, this verse appears in a letter to a body of Believers who are being encouraged to remain in right fellowship with God and one another. In fact, the whole of 1 John offers these (and future) Believers a test for a being a genuine Christian - those who confess and are repentant of sin (1 John 1), those who don’t practice willful sin (1 John 2), those who love their brother (1 John 3-4), and those who love God by keeping His commandments (1 John 4-5). And, yet, those who would make a case for suicide being a “forgivable sin” would say one who commits self-murder can be assured of Christ’s salvation, no repentance necessary.