Hebrews 10:22

let us draw near with a sincere heart in the assurance that faith brings, ¹  because we have had our hearts sprinkled clean from an evil conscience ²  and our bodies washed in pure water.

Ex 29:4; Le 8:6; Le 14:7; Nu 8:7; Nu 19:18,19; 1Ki 15:3; 1Ch 12:33; 1Ch 28:9; 1Ch 29:17; Ps 9:1; Ps 32:11; Ps 51:10; Ps 73:28; Ps 84:11; Ps 94:15; Ps 111:1; Ps 119:2,7,10,34,58,69,80,145; Pr 23:26; Isa 29:13; Isa 52:15; Jer 3:10; Jer 24:7; Jer 30:21; Eze 16:9; Eze 36:25; Zec 13:1; Mt 3:11; Mt 21:21,22; Mr 11:23,24; Joh 3:5; Joh 8:9; Joh 13:8-10; Ac 8:21; 1Co 6:11; 2Co 7:1; Eph 3:12; Eph 5:26; Eph 6:5; 1Ti 4:2; Tit 3:5; Heb 4:16; Heb 7:19; Heb 9:10; Heb 9:13,14,19; Heb 10:19; Heb 11:28; Heb 12:24; Jas 1:6; Jas 4:8; 1Pe 1:2; 1Pe 3:21; 1Jo 3:19,21,22; 1Jo 3:20; Re 1:5

¹ tn Grk “in assurance of faith.”

² sn The phrase our hearts sprinkled clean from an evil conscience combines the OT imagery of the sprinkling with blood to give ritual purity with the emphasis on the interior cleansing provided by the new covenant: It is the heart that is cleansed and the conscience made perfect (cf. Heb 8:10; 9:9, 14; 10:2, 16).