Biblical Christianity doesn’t call Christians sinners. It says they are perfect in spirit (Hebrews 10:14). They are new creations (2 Cor. 5:17). Created in right-standing and set-apartness (Eph. 4:22). They are one spirit with God, no separation (1 Cor. 6:17). As he is right now, so are they right now (1 John 4:17). Many Christians believe this.