For if the word spoken by angels was stedfast, and every transgression and disobedience received a just recompence of reward;
(Compare Hebrews 2:3) Argument a fortiori.
Spoken by angels - the Mosaic law spoken by the ministration of angels (Deuteronomy 33:2; Psalms 68:17; Acts 7:53; Galatians 3:19). When it is said, Exodus 20:1, "God spake," it means He spake by angels as His mouthpiece, or angels repeating in unison with His voice the decalogue. Whereas the Gospel was first spoken by the Lord alone.
Was stedfast, х egeneto (G1096) bebaios (G949)] - 'was made stedfast,' or "confirmed:" was enforced by penalties on those violating it.
Transgression - by doing evil; х parabasis (G3847)] overstepping its bounds: a positive violation.
Disobedience, х parakoee (G3876)] - by neglecting to do good: a negative violation.
Recompence (Deuteronomy 32:35).