Most covenants in ancient times were two-party agreements. That is, each person or group involved specified what he or she would do to carry out the agreement. If one side failed to perform, the agreement was broken, and the other side was no longer obligated.
But look at God’s covenant with Noah.
God made no conditions. There are no “ifs.” Instead God simply said, “I now make a commitment to you and your descendants. Never again. Never again will there be a flood to destroy the earth.” http://ow.ly/i/qw8pD