For the first time the word ‘covenant’ is used in the Bible. We see a covenant in the Garden of Eden, but we see it because that is what it appears to be: a covenant of works in Eden, which fell very, very early.
That is another reason why it is a picture of conversion – all we do is by faith enter in, trust in Christ. He suffers and dies for sins. All the Father’s billows and waves passed over him, but he lifts his church up above the flood waters. He sees us through the flood. He delivers us from the everlasting punishment of sin, the judgment from Almighty God, the Father.