Not once did it every workout for humans to decide on their own to do something and say it was for God. It is always a stench in His nostrils. This has ALWAYS been the problem, since Genesis we have wanted to do it "our way". Not because it's right but because it is easy, fun and it's what everyone else is doing. Every time He says: "DON'T DO AS THE PAGANS DO"
This is the time of year we celebrate Passover. In the Exodus 12 account the congregation was commanded to get out of town quickly. They were commanded to have their sandals on and leave before the dough had time to rise. They were to take the dough with them without leavening. The rest of the week they were to eat unleavened bread daily.