John Gill Commentary Amos 5:25

"Did ye bring unto me sacrifices and offerings in the wilderness forty years, O house of Israel?" — Amos 5:25 (ASV)

Have you offered to me sacrifices and offerings No; they were not offered to God, but to devils, to the golden calf, and to the host of heaven:

so their fathers did in the wilderness forty years; where sacrifices were omitted during that time, a round number for a broken one, it being about thirty eight years; and these their children were imitators of them, and offered sacrifice to idols too, and therefore deserved punishment as they:

even you, O house of Israel? the ten tribes, who are here particularly charged and threatened; (See Gill on Acts 7:42).