God's promise to Abraham still has authority
15 My Christian friends, I will use an example from our lives. Two people may make an agreement together and they both agree to it properly. If they do that, nobody else can change that agreement. They cannot take away its authority. 16 In the same way, God promised to bless Abraham and Abraham's descendant. The Bible does not say ‘descendants’. It does not speak about ‘many people’. No, God promised to bless Abraham's descendant. He speaks about one person, and that person is Christ. 17 What I mean is this: God made an agreement with Abraham. He promised to bless him. Then, 430 years later, God gave his Law to Moses for the Jewish people. But that Law could not take away the authority of God's agreement with Abraham. It could not stop what God had already promised. 18 God has promised to give good things to his children. But that does not happen as a result of God's Law. If that were true, then we would not receive God's good things as a result of his promise. But God gave those good things to Abraham as a gift, because he had promised to bless Abraham.
The purpose of God's Law
19 So we could ask: Why did God give his Law to his people after his promise to Abraham? He gave his Law to show them which things are wrong. It would have authority until Abraham's special descendant would come. That was the descendant that God had promised to bless. God used angels to give his Law to his people. It was Moses who received the Law from God, and Moses then took it to God's people. 20 But God himself gave his promise to Abraham. It was not necessary to have somebody in between, like Moses.
21 So should we say that God's Law works against God's promises? No, certainly that is not true! It is not possible for the rules of any law to give us life with God. If that could happen, then God would have accepted us as right if we obeyed those rules. 22 But the Bible says that sin has power over everyone. People can not get free. This means that we can only receive what God has promised when we trust Jesus Christ. God gives his promise to those who believe.
23 But before God showed us the way of faith, the Law had authority over us. God's Law kept us safe, until God showed us that we must believe in Christ. 24 In that way, God's Law was like our guide. It kept us safe until Christ came. Then God could accept us as right because we trusted Christ. 25 But now that the way of faith in Christ has come, we do not need God's Law to keep us safe any longer.
