Therefore (1) we ought to give the more earnest heed to the things which (a) we have heard, lest at any time we (b) should let [them] slip.
(1) Now pausing to show to what end and purpose all these things were spoken, that is, to understand by the excellency of Christ above all creatures, that his doctrine, majesty and priesthood, is most perfect, he uses an exhortation taken from a comparison.
(a) He makes himself a hearer.
(b) They are said to let the word run out, who do not hold it securely and remember the word when they have heard it.