Joshua 8:34,35

It is a most profitable thing to have the law often read, in order that, by viewing the universal condemnation of it, the precious delivery from it by the law-fulfilling, law-expiating, and sin-atoning merits, and blood of Jesus, might become more exceedingly precious. For certain it is, the Holy Ghost hath been pleased to leave it upon record, that by the law is the knowledge of sin, and it becomes a blessed schoolmaster to Christ. And I venture to think, that it is on this account, the Ten Commandments are placed over the altars of our churches, and read every Lord's day, in order that true believers in Christ, may see and confess the justice of their condemnation, in the very moment they are looking up to that precious blood of Jesus, as represented at the table, being shed to wash away the sins of all his people. Romans 7:7; Galatians 3:24.