God promised Abraham and his descendants that he would give them the world. This promise wasn't made because Abraham had obeyed a law, but because his faith in God made him acceptable.
Your descendants will spread over the earth in all directions and will become as numerous as the specks of dust. Your family will be a blessing to all people.
Because Noah had faith, he was warned about something that had not yet happened. He obeyed and built a boat that saved him and his family. In this way the people of the world were judged, and Noah was given the blessings that come to everyone who pleases God.
Although Melchizedek wasn't a descendant of Levi, Abraham gave him a tenth of what he had. Then Melchizedek blessed Abraham, who had been given God's promise.