God is our only worthy Master. All other masters only add to our burdens requiring more work. God gives us rest & does the rest Himself. The focus is not on the results but on Him. By spending time with Him, we become more like Him, & that enables us for service to Him. When Moses told Pharaoh that their God commanded them to go feast with Him, Pharaoh put himself in opposition to God as the one they should obey & fear. There will always be others trying to pull us away from our one true master that is The Lord, God.