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.
20 Now a mediator is not a mediator of one, but God is one.
Paul here ask a question about why was the law handed down. The law reveals man’s utter sinfulness, inability to save himself, and desperate need of a Savior, it was never intended to be the way of salvation. The law could neither save nor overrule the covenant God made made with Abraham, so why give it? The laws and ordinances were for a purpose. Had there been no law, we would not have been aware of our need for the Savior. Every man was doing what was right in his own sight, and God gave the law to show the error. Paul’s point is apparently that a mediator is required when more than one party is involved, but God alone ratified the covenant with Abraham. We see from this, that the mediator is actually a go-between. In the case of Moses as mediator, he is between God and mankind. He represented God to mankind and mankind to God. The way “God is one”, is in the Spirit. We need to praise God everyday that we are save by grace and not by the law cause there is no way we could completely follow the law to a tee everyday.