Unleavened Bread
The Feast of Unleavened Bread pictures a time when leaven, sin, is put out of our lives, On the last day of the Feast of Unleavened Bread, after leading Israel out of Egypt, God parted the waters of the Red Sea, and “the children of Israel walked upon dry land in the midst of the sea; and the waters were a wall unto them on their right hand, and on their left,” Exodus 14:29.
The concept of the painting was that as Moses and the children of Israel crossed through the sea they would be able to view the reefs and marine life through the transparent walls of the Red Sea. As God delivered the ancient Israelites from enslavement to Egypt, so He delivers us from our enslavement to sin (Romans 6:12-18).