Therefore we ought to give the more earnest heed to the things which we have heard. — Better, to the things heard; for this expression contains the complement of the thought of Hebrews 1:1. Both “speak” and “hear” are words which carry weighty emphasis in this Epistle. (See Hebrews 1:1; Hebrews 2:2; Hebrews 12:25; Hebrews 3:5; Hebrews 3:7; Hebrews 4:2, et al.) Because of the supreme dignity of Him in whom at the last God speaks, men are bound to give the more earnest heed to the words spoken, whether heard by them from the Lord Himself or (as in this case, Hebrews 2:3) from His servants.
Lest at any time we should let them slip. — This translation (first introduced by the Genevan Bible of 1560) substantially gives the sense, but inverts the figure presented in the Greek. The words must be rendered, lest possibly we drift away (Wiclif, “lest perauenture we fleten awey”). It is the man that is in danger of being carried along by the current: unless the mind be held closely to the words that God has spoken, it must drift away from them, and from the salvation which they promise. There seems no foundation for the rendering of the margin, first given in the Genevan Testament of 1557.