Acts 13:39

And by him - On his account, and through him, all that believe in his Divine mission, and the end for which he has been manifested, namely, to put away sin by the sacrifice of himself, are justified from all things, from the guilt of all transgressions committed against God; from which ye could not be justified by the law of Moses; because it is impossible that the blood of bulls and goats, and the ashes of a heifer sprinkling the unclean, or any other rite or service of this kind, could take away sin from the soul, cancel its guilt in the conscience, or make an atonement to the Divine justice; but this is the sacrifice which God has required; this is every way suited to the end for which it has been instituted; and this is the sacrifice alone which God can accept. Your law says, "Do this, and ye shall live;" and, "Cursed is every one that continueth not in all things that are written in the book of the law to do them." Ye have not done these things required; ye have not continued in any good thing; ye have not only not done all things commanded, but ye have done none, none as they ought to be done; and therefore ye are under the curse. The Gospel says, Believe on the Lord Jesus; credit his Divine mission; consider his death an atonement for sin; believe in his resurrection, as a proof that the atonement is made, believe that he suffered, died, and rose again for your justification; and that for his sake God, though he be infinitely just, can be the justifier of all who believe in him. By the law of Moses there is neither justification nor salvation: in Jesus Christ there are both, and all the sure mercies of David. Therefore, believe on the Lord Jesus Christ, and ye shall be justified from all things, from which ye could not be justified by the law of Moses.

And by him - By means of him; by his sufferings and death.

All that believe - See the notes on Mark 16:16.

Are justified - Are regarded and treated as if they were righteous. They are pardoned, and admitted to the favor of God, and treated as if they had not offended. See this point explained in the notes on Romans 1:17; Romans 3:24-25; Romans 4:1-8.

From all things - From the guilt of all offences.

From which ye could not ... - The Law of Moses commanded what was to be done. It appointed sacrifices and offerings as typical of a greater sacrifice. But those sacrifices could not take away sin. See the notes on Hebrews 9:7-14; Hebrews 10:1-4, Hebrews 10:11. The design of the Law was not to reveal a way of pardon. That was reserved to be the unique purpose of the gospel.

The law of Moses - The commands and institutions which he, under the direction of God, established.

13:39 Every one that believeth is justified from all things - Has the actual forgiveness of all his sins, at the very time of his believing; from which ye could not be justified - Not only ye cannot now; but ye never could. For it afforded no expiation for presumptuous sins. By the law of Moses - The whole Mosaic institution! The division of the law into moral and ceremonial was not so common among the Jews, as it is among us. Nor does the apostle here consider it at all: but Moses and Christ are opposed to each other.