Amos’s words point to debauchery and wastefulness. Instead of drinking wine from a cup (2 Samuel 12:3; Proverbs 23:31; Jeremiah 25:17) these people drink straight from storage basins. Anointing was common practice since oil kills lice, however, demanding finest quality oil for this is an example of excess.
6 who drink wine in bowls and anoint themselves with the finest oils, but are not grieved over the ruin of Joseph!