During the entire time of his dedication, he is set apart to God.

since they've been set apart for me from among the Israelis. I've taken them for myself instead of the first to open the womb every firstborn of the Israelis,

Because the Israelis argued with the LORD and he was set apart among them, this place was called the Meribah Springs.

I've set the descendants of Levi apart from the Israelis so that Aaron and his sons would work in service at the appointed place of meeting, making atonement on behalf of the Israelis so that there won't be a plague among the Israelis whenever they approach the sanctuary."