So once more the people complained against Moses. “Give us water to drink!” they demanded. “Quiet!” Moses replied. “Why are you complaining against me? And why are you testing the Lord?”
And Peter said, “How could the two of you even think of conspiring to test the Spirit of the Lord like this? The young men who buried your husband are just outside the door, and they will carry you out, too.”
So now that you know God (or should I say, now that God knows you), why do you want to go back again and become slaves once more to the weak and useless spiritual principles of this world?
This is an illustration pointing to the present time. For the gifts and sacrifices that the priests offer are not able to cleanse the consciences of the people who bring them.