A.T. Robertson Commentary Hebrews 10:19

"Having therefore, brethren, boldness to enter into the holy place by the blood of Jesus," — Hebrews 10:19 (ASV)

Having therefore (εχοντες ουν). The author now gives a second resume of the five arguments concerning the superior priestly work of Christ (10:19-25) coupled with an earnest exhortation like that in 4:14-16, with which he began the discussion, before he proceeds to treat at length the fifth and last one, the better promises in Christ (10:26-12:3).

Boldness (παρρησιαν). This is the dominant note all through the Epistle (3:6; 4:16; 10:19,35). They were tempted to give up Christ, to be quitters. Boldness (courage) is the need of the hour.

Into the holy place (των αγιων). That is, the heavenly sanctuary where Jesus is (6:18-20). This is the better sanctuary (9:1-12).

By the blood of Jesus (εν τω αιματ Ιησου). This is the better sacrifice just discussed (9:13-10:18).