Galatians 3:19
Wherefore then serveth the law? It was added because of transgressions, till the seed should come to whom the promise was made; and it was ordained by angels in the hand of a mediator. Wherefore then serveth the law? It was added because of transgressions, till the seed should come to whom the promise was made; and it was ordained by angels in the hand of a mediator.
The law spoken of as added because of transgressions is the ceremonial system, added because the moral law had been transgressed. The moral law has been binding since creation and continues through all time, while the ceremonial law served a particular temporary purpose within the plan of salvation. Its sacrifices and offerings pointed forward to redemption through Christ, and its types met their fulfillment in his death. Its rites also helped Israel remember God and guarded the commandments from being violated.
The law given at Sinai was ordained through a mediator who himself spoke it and by whose power human hearts can be brought into harmony with its principles. That law expresses the principle of love and makes heaven's law known on earth, given so that Israel would be holy people to God. Together with its context, the verse gives plain, clear and convincing light on the covenants and the law that every candid and unprejudiced mind will receive. Together with its context, it sets out in clear and distinct lines the truth about righteousness through Christ.
Its correct understanding is whatever agrees with what God has said. The disputed question over which law is meant is trivial compared with receiving that light and showing a Christlike spirit toward one another. Attempts to draw a different position on the covenants from this passage will come to nothing. Fear of having to accept what it teaches about the law leads people to turn away and to twist Scripture to cloud and mislead minds, in the manner of those who hung on the words of Christ. No one is prepared to receive light either to establish or to refute a position on this passage until truly converted before God.