Jamieson, Fausset and Brown on Amos 8:3

3. songs of ... temple--(Am 5:23). The joyous hymns in the temple of Judah (or rather, in the Beth-el "royal temple," Am 7:13; for the allusion is to Israel, not Judah, throughout this chapter) shall be changed into "howlings." Grotius translates, "palace"; compare Am 6:5, as to the songs there. But Am 5:23, and Am 7:13, favor English Version.

they shall cast them forth with silence--not as the Margin, "be silent." It is an adverb, "silently." There shall be such great slaughter as even to prevent the bodies being buried [Calvin]. There shall be none of the usual professional mourners (Am 5:16), but the bodies will be cast out in silence. Perhaps also is meant that terror, both of God (compare Am 6:10) and of the foe, shall close their lips.