Midrash su Isaia 24:6

R. Akiba declared: A pact of excommunication and an oath are actually one and the same. You learn this from Joshua, who placed Jericho under a ban. Achan was burned to death when he violated the ban by taking things from Jericho and hiding them in his tents. These (things) were the cloaks and the golden tongues from inside the mouths of the idols at Jericho, upon which an unclean (i.e., idolatrous) name had been engraved. Because he violated the pact of excommunication, thirty-six Israelites perished,³The members of Achan’s family. See B. Sanhedrin 44a. and Joshua rent his clothes and prostrated himself upon the ground before the ark. And the Lord said unto Joshua: “Get thee up; wherefore, now, art thou fallen upon thy face? Israel hath sinned; yea, they have even transgressed My covenant which I commanded them; yea, they have even taken of the devoted thing; and have also stolen, etc. (Josh. 7:10). Why is the word gam (variously translated “yea” and “also” in the preceding passage) repeated five times in this verse? To teach us that whosoever violates a vow of excommunication is considered to be transgressing against the Five Books of Moses. For all other sins, the guilty one is punished, but for the violation of an oath of excommunication the transgressor and all mankind are punished, as it is said: Therefore doth the land mourn, and everyone that dwelleth therein doth languish (Hos. 4:3), and elsewhere it states: Therefore, hath a curse devoured the land, and they that dwell therein are found guilty (Isa. 24:6). Similarly, you find that it is said about Achan: Did not Achan the son of Zerah commit a trespass against the banned things, and wrath fell upon all the congregation of Israel? And that man perished not alone in his iniquity (Josh. 22:20).

8) And thus is it written (Isaiah 24:6) "Therefore a (vain) oath has devoured the earth, and the dwellers therein are found guilty. Therefore, the inhabitants of the earth are parched, and few men are left."