4:23 On their release, Peter and John immediately went back to their own people, that is, the believers, and told them what had happened. For their place of meeting, see notes on 1:13 and the discussion on 12:12. Their specific mention of the chief priests and elders again points to the Sadducees as their chief opponents (see disc. on vv. 6, 8).

4:24 The seriousness of what they had to tell and their sense of dependence upon God were such that the whole group fell to prayer. The expression they raised their voices together has been taken to mean that they were all inspired to say exactly the same words, but that implies too mechanical a view of inspiration. They may all have prayed in turn (as others suggest), but in that case Luke has given us only the general thrust of their various pr…