The story of the Israelites keeping the Passover and their subsequent departure from Egypt on the first day of Unleavened Bread is what we have just summarized here. What I wanted in those verses, in both the Passover instructions and also the instructions on the first day of Unleavened Bread as they were preparing to leave, is that it is twice mentioned that the children of Israel did as Moses had told them, by the instruction of God. So there was a hierarchy there, a headship. God gave the command and Moses, through Aaron, let the people know what was going to go on. And the people listened. The people listened to Moses because God was behind it. This was maybe the high point of their belief because (maybe it was at Sinai, who knows?) at least at this point, they were willing to leave on Moses' word.