The interpretation timeline
Psalm 105:17 Douay-Rheims

The earth opened and swallowed up Dathan: and covered the congregation of Abiron.

A.D. 430 – 1849 4 witnesses

Patristic

before A.D. 750
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“"The earth opened," he says, "and swallowed up Dathan, and covered over the congregation of Abiram" [Psalm 106:17]: "swallowed up" answers to "covered over." Both Dathan and Abiram were equally concerned in a most sacrilegious schism.”

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
“The earth opened up, etc. It appears that [the Psalmist] bestowed honor upon the sons of Korah [by refraining] from mentioning their father. He attributed the sin to Dathan and Abiram.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“The earth opened and swallowed up Dathan,.... One of the heads of the conspirators against Moses and Aaron; the earth clave asunder under him and his company; opened itself, or its mouth, and devoured them at once. This was a new, marvellous, and unheard of thing, and which manifestly showed the divine displeasure and resentment at their proceedings; and served greatly to confirm the authority and office of Moses and Aaron; see Num 16:30. And covered the company of Abiram; another of the heads of the confederacy. Korah is not mentioned, though the earth swallowed up him and all that belonged to him, their houses and their goods; some think the reason is because it was well known that this was his case, when Dathan and Abiram are not so expressly mentioned in the history by Moses; as also because the sons of Korah were now in esteem as singers; nor is On the son of Peleth mentioned, because, as Kimchi says, he repented, and desisted from the conspiracy.”
Source
1849
A.D.
1774–1849
“Abiron. With Core, though his children were preserved. (Calmet) — God presently resented the injury done to his ministers. (Eusebius)”
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.