Make a new thing. — Literally, create a creation — i.e., do something hitherto unknown.
Into the pit. — Literally, into Sheol.
Related Commentaries of Numbers 16:30
Numbers 16:30
30 But if the LORD makea a new thing, and the earth open her mouth, and swallow them up, with all that appertain unto them, and they go down quick into the pit; then ye shall understand that these men have provoked the LORD.