"strike" in the hiphil,
the only form to appear in Amos, means "strike, strike a blow, hit"
or even "destroy". In Amos always Adonai is the one "striking".
Once he "strikes" Israelite crops with disease 4:9
and three times he "strikes" buildings 3:15; 6:11;
9:1 (or in this last case orders
it "struck"). Where buildings are involved translators have sometimes
chosen the notion "destroy" - I have preferred to keep alive the picture
of Adonai's personal involvement in the destruction, which Amos seems to intend.