20, 21. the Lord spake unto Moses and Aaron, saying, Separate yourselves from among this congregation--Curiosity to witness the exciting spectacle attracted a vast concourse of the people, and it would seem that the popular mind had been incited to evil by the clamors of the mutineers against Moses and Aaron. There was something in their behavior very offensive to God; for after His glory had appeared--as at the installation of Aaron (Le 9:23), so now for his confirmation in the sacred office--He bade Moses and Aaron withdraw from the assembly "that He might consume them in a moment."

JFB.