כֹּה koh "thus" used often in the prophets to introduce the messenger formula, "thus says Adonai" (e.g. Am 1:3, 6, 9, 11, 13; 2:1, 4, 6; 3:11, 12; 5:3, 4, 16; 7:17). This formula is used once in Amos to report Amos' own speech (7:11 Amaziah reports to king Jeroboam).

In Amos 4:12 "thus" refers to some unspecified action (perhaps symbolized by something the speaker did).

The first four (of five) vision accounts begin: "thus he showed me..." (7:1, 4, 7; 8:1).