Dathan and Abiram — To treat with them and give them, as he had done Korah and his company, a timely admonition. Come up — To Moses's tabernacle, whither the people used to go up for judgment. Men are said in scripture phrase to go up to places of judgment.
Related Commentaries of Numbers 16:12
Numbers 16:12
12 And Moses sent to call Dathan and Abiram, the sons of Eliab: which said, We will not come up: