I. The unspeakable privilege which the people of God enjoy in having the oracles of God consigned over to them, and being entrusted with the sacred writings. That they may sanctify the Lord of hosts, may make him their fear and find him their sanctuary, bind up the testimony, v. 16. Note, It is a great instance of God's care of his church and love to it that he has lodged in it the invaluable treasure of divine revelation. 1. It is a testimony and a law; not only this prophecy is so, which must therefore be preserved safely for the comfort of God's people in the approaching times of trouble and distress, but the whole word of God is so; God has attested it, and he has enjoined it. As a testimony it directs our faith; as a law it directs our practice; and we ought both to subscribe to the truths of it and to submit to the precepts of it. 2. This testimony and this law are bound up and sealed, for we are not to add to them nor diminish from them; they are a letter from God to man, folded up and sealed, a proclamation under the broad seal. The binding up and sealing of the Old Testament signified that the full explication of many of the prophecies of it was reserved for the New-Testament times. Dan. xii. 4, Seal the book till the time of the end; but what was then bound up and sealed is now open and unsealed, and revealed unto babes, Matt. xi. 25. Yet with reference to the other world, and the future state, still the testimony is bound up and sealed, for we know but in part, and prophesy but in part. 3. They are lodged as a sacred deposit in the hands of the disciples of the children of the prophets and the covenant, Acts iii. 25. This is the good thing which is committed to them, and which they are charged with the custody of, 2 Tim. i. 13, 14. Those that had prophets for their tutors must still keep close to the written word.