Verse 21. "Bind them continually" signifieth such a care of firm binding as when one, to be sure of binding strong, doth as it were always hold the strings in his hands, and is continually pulling them. And surely we had need so to bind continually God's commandments and law to our hearts and necks, for they are but loose knots which the best of us make, and they are ever and anon slipping back, unless our diligence be still pulling hard to keep them close. To bind that to our hearts which bindeth us to godliness, is to loose ourselves; to tie that about our necks which ties us to religion, is to free ourselves. A good father's commandment, a good mother's law, doth tie us in observance unto God's law; if, therefore, we shall bind the one upon our hearts continually, if we shall tie the other about our necks, this will give us the freedom of true sons, both with God and man. This hearty binding, and willing tying of ourselves, taketh away all burdensome feeling of any tie or binding for us.--_Jermin._ Bind them upon thine heart "for ever," because through all eternity these commandments will be the very highest objects of affection. Holiness will be the greatest treasure of the blessed. And, second, "tie them about thy neck" for a still higher reason Holiness is a bright ornament. It is precious on its own account. It is worthy, not on account of what it does, or of what it seems, but of what it is. That is, if we neither had joy in it or won profit by it, it would be glorious like a necklace upon the blind, intrinsically, and on its own account.--_Miller._ Verse 22. No such guide to God as the Word, which, while a man holds to, he may safely say, "Lord, if I be deceived, Thou hast deceived me; if I be out of the way, Thy Word has misled me." If thou sleep with some good meditation in thy mind it shall keep thee from foolish and sinful dreams and fancies, and set thy heart in a holy frame when thou awakest. He that raketh up his fire at night shall find fire in the morning. "How precious are Thy thoughts unto me, O God" (Psa. cxxxix. 17). What follows? "When I awake, I am still with Thee" (verse 18).--_Trapp._