Mankind and the problem of sin cont.; the barrier between God and man; Propitiation/Expiation; Rom 3:23-25; Heb 2:17; 1 Jn 2:2, 4:10; Ark of the Covenant; Exo 25:17; Imputation; 1 Cor 1:30; 2 Cor 5:21; Justification; Rom 4:1-5; Gal 2:16; Gen 15:6; Zech 3:1-3