Deuteronomy 6:6 - Joseph Benson’s Commentary on the Old and New Testaments

These words shall be in thy heart Though the words alone, without the things expressed by them, will do us no good, yet as we are in danger of losing the things if we neglect the words, we must, therefore, even lay the words up in our hearts. Our thoughts must be daily conversant with them, and employed about them, that thereby our whole soul may be brought under the influence and impression of them.