Acts 12:5

“Peter therefore was kept in prison, etc.] Till the feast of the passover was at an end: but prayer was made without ceasing of the church unto God for him; this was not done by them as a body together, but either by them in several bands at different places, or by some of the principal of the church at some one certain place, and where they might frequently change companies, and keep on a continual incessant prayer for days together; and whereas it is very likely it might be at the beginning of the passover, when Peter was taken up, and it was now at the close of it, when he was delivered, the church might be engaged by companies alternately, a whole week together, in prayer, on this…”

“prayer was made without ceasing--rather, "instant," "earnest," "urgent" (Margin); as in Luk 22:44; Act 26:7; and Pe1 4:8 (see Greek). of the church unto God for him--not in public assembly, for it was evidently not safe to meet thus; but in little groups in private houses, one of which was Mary's (Act 12:12). And this was kept up during all the days of unleavened bread.”

“But prayer was made - The church was apprised of his imprisonment and danger, and had no resource but to apply to God by prayer. In scenes of danger there is no other refuge; and the result shows that even in most discouraging circumstances God can hear prayer. Nothing scarcely could appear more hopeless than the idea of rescuing Peter out of the hands of Herod, and out of the prison, and out of the custody of sixteen men, by prayer. But the prayer of faith Was prevalent with God. Without ceasing - Intense, steady, ardent prayer. The word used here ἐκτενής ektenēs is found in only one other place in the New Testament, 1 Peter 4:8, “Have fervent charity among yourselves.” The word has…”

“Continual prayer was made for him - Yet when their prayer was answered, they could scarce believe it, Act 12:15. But why had they not prayed for St. James also? Because he was put to death as soon as apprehended. Acts 12:6”

“12:5 the church prayed very earnestly: God answers the earnest prayers of his people (12:6-17; see Luke 11:1-13; 18:1-8; cp. Matt 7:7-11; John 15:7; Phil 4:6-7; Jas 5:16; 1 Jn 3:22).”

“prayer was made without ceasing: or, instant and earnest prayer was made, Act 12:12; Isa 62:6, Isa 62:7; Mat 18:19; Luk 18:1; Co1 12:26; Co2 1:11; Eph 6:18-20; Th1 5:17; Heb 13:3; Jam 5:16 Acts 12:6”