Non-visionary material followed the third vision (7:7-9), and non-visionary material follows the fourth vision (8:1-3).
8:4 Amos called those who oppressed the needy and tried to exterminate them to hear him (cf. 5:11). Israel's law called God's people to extend an open hand of generosity to the poor (Deut. 15:7-11; cf. Ps. 72:12-13), but the guilty Israelites were trying to eliminate them.
8:5-6 These oppressors were eager for the monthly festivals and the weekly Sabbaths to end so they could get back to work cheating their fellow countrymen to make big profits. These holidays were days of rest and worship, but the Israelite workaholics did not enjoy them, though they observed them as good religious people. They were anxious to enslave the needy in their debt so they could control them and use them for their own selfish ends (cf. 2:6).
"These people regarded cereals and human beings equally as stock for sale. Their practices were both dishonest and inhumane."71
Merchandising was their priority, not worshipping. Profit was their god, and they willingly sacrificed more important things for it. People who focus intently on what they will do after worship is over do not engage in true worship or enter into the spirit of worship.72