There are many ways to interpret Genesis. Philosophically, it provides the subject of Aristotle's first cause argument for the creation: God! Scientifically, creationists have noted that the progression of God's creation supports what we understand about life: light comes first, then plants, then animals, and finally people. These readings are anachronistic, though, for the Bible first and foremost tells us about God and his relationship with creation. Thus, theologically, Genesis 1 tells us that God's Word does what it says. That is God's Word potentiates the very thing that it describes: let there be ... , and there was. Because God is unchanging (cf. Hebrews 13:8), so is his Word (cf. Luke 21:33). Therefore, God's Word still does what it says: "Baptism now saves you" (cf. 1 Peter3:21), "This is my body...This is my blood for you" (cf. Matthew 26, Mark 14, 1 Corinthians 11) and "In the stead and by the command of my Lord Jesus Christ I forgive you all of your sins (cf. John 20).