Numbers 16:49 (BSB)

But those who died from the plague numbered 14,700, in addition to those who had died on account of Korah.

From Numbers 16. Also in the ESV.

Commentary on Numbers 16:49

• John Calvin (Reformed), Calvin's Commentaries on Numbers 16:49: 49. Now they that died in the plague. Already three hundred, or thereabouts, had been destroyed on account of the conspiracy made with Korah; now a much larger number was added. And this, forsooth, is what the wicked reap from their obstinacy, that God being more and more provoked redoubles His punishments; even as He threatens that, unless those whom He chastises shall repent, he...
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Numbers 16:41-50: Here is, I. A new rebellion raised the very next day against Moses and Aaron. Be astonished, O heavens, at this, and wonder, O earth! Was there ever such an instance of the incurable corruption of sinners? On the morrow (Num 16:41) the body of the people mutinied. 1. Though they were so lately terrified by the sight of the punishment of the rebels.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Numbers 16:49: And Aaron returned unto Moses,.... After he had by his atonement and intercession put a stop to the wrath of God broken forth upon the people: unto the door of the tabernacle of the congregation; where Moses was waiting for his return, and to know the issue of this affair: and the plague was stayed: even before Aaron left the camp, and is here repeated...
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Numbers 16:43-50: Num 16:43-50 Thereupon they both went into the court of (פּני אל, as in Lev 9:5) the tabernacle, and God commanded them to rise up (הרמּוּ, Niphal of רמם = רוּם; see Ges. §65, Anm. 5) out of this congregation, which He would immediately destroy. But they fell upon their faces in prayer, as in Num 16:21-22.