Exodus 15 ends with God’s people 3 days into the journey after the crossing of the Red Sea. They have seen the salvation of the Lord, they have experienced authentic worship; neither of which matters now three days in. Worship is quickly replaced by grumbling. How quickly grumbling can replace our worship. How do we fight against this tendency to grumble? Moses gives us a few clues: focus on Christ (God’s salvation), and know where your help comes from.