In their heat I will make their feasts - In the midst of their being heated with wine, I will give them “their” potions, - a very different cup to drink, but one which is their due, the wine cup of My stupefying wrath (Jer 25:15; Jer 49:12; Isa 51:17; Lam 4:21).
rejoice, and sleep ... perpetual, etc. - that they may exult, and in the midst of their jubilant exultation sleep the sleep of death (Jer 51:57; Isa 21:4, Isa 21:5).