What does Acts 7:42 mean?
The Jewish Jesus-follower Stephen continues his comparison of the Jews who accuse him of disrespecting Moses and the Law to the Israelites who truly rejected Moses and his Law. He has reminded his accusers of the golden calf the Israelites worshiped at the base of Mount Sinai (Acts 7:39–41; Exodus 32), and now mentions the further idolatry Israel as a nation willingly adopted.The claim in this verse is a bit confusing. The "host of heaven" means foreign gods. After the account with the golden calf, the next major idolatry mentioned is the Baal worship at Peor, not long before the Israelites were to enter the Promised Land (Numbers 25).
At Mount Sinai, in the first year of the forty-year trek through the wilderness, God gave the Israelites specific instructions about how and when to offer sacrifices. However, there is no record of sacrifices or festivals being performed—other than the consecration ritual of Aaron and his sons—until Passover after the Israelites crossed the Jordan into Israel (Joshua 5:10–12).
Verse 42 and 43 from this chapter are a quote of Amos 5:25–27. The NET Bible commentary explains that Acts 7:42 and Amos 5:25 are rhetorical questions which expect a negative reply, but that the question and reply are probably hyperbole. The point isn't that not one Israelite, ever, in any way sacrificed to God during the forty years. Rather, it's that the sacrifices were of negligible importance compared to God's expectation that they wouldn't sacrifice to false gods. In fact, scholars posit that many of the strict regulations about sacrifices were aimed at that goal: requiring that all sheep, goats, and oxen were sacrificed by the priests at the tabernacle would ensure the Israelites didn't sacrifice to goat demons (Leviticus 17:7).
In one of his last addresses to the Israelites, Moses told them that idolatry would lead to exile where they would have little choice but to worship foreign gods, but God would always rescue His people if they truly repented (Deuteronomy 4:25–31). The people were taken into exile, first to Assyria and then to Babylon. It is the bitter memory of exile that led the Jews of Stephen's time to so revere the Law and the temple. But their reverence turned to idolatry.