Moses and Aaron went before Pharaoh and delivered a message from God saying, "Let my people go so that they may hold a festival for me in the wilderness." Pharaoh responded by saying, "Who is the Lord that I should obey Him and let Israel go? I do not know the Lord." This confrontation revealed that the Israelites were not yet ready for deliverance and would have to suffer hardship before gaining their freedom. The events were meant to provide incentive for the Israelites to want to leave Egypt and achieve the necessary unification of Israel.