Acts 4:31

4:31 When they had prayed, the place where they were assembled together was shaken, and they were all filled with the Holy Spirit and began to speak the word of God courageously.

Acts 16:26

16:26 Suddenly a great earthquake occurred, so that the foundations of the prison were shaken. Immediately all the doors flew open, and the bonds of all the prisoners came loose.

tn Grk “And when.” Because of the difference between Greek style, which often begins sentences or clauses with “and,” and English style, which generally does not, καί (kai) has not been translated here.

sn The place where they were assembled…was shaken. This signifies that God is in their midst. See Acts 16:26; Exod 19:18; Ps 114:7; Isa 6:4.

tn The imperfect verb has been translated as an ingressive imperfect (“began to speak”). Logical sequencing suggests that their speaking began after they were filled with the Spirit. The prayer was answered immediately.

tn Or “speak God’s message.”

tn Or “with boldness.”

tn Or perhaps, “chains.” The translation of τὰ δεσμά (ta desma) is to some extent affected by the understanding of ξύλον (xulon, “stocks”) in v. 24. It is possible (as mentioned in L&N 18.12) that this does not mean “stocks” but a block of wood (a log or wooden column) in the prison to which prisoners’ feet were chained or tied.