Albert Barnes Commentary Acts 5:24

"Now when the captain of the temple and the chief priests heard these words, they were much perplexed concerning them whereunto this would grow." — Acts 5:24 (ASV)

The captain of the temple. See Barnes on Acts 4:1.

Doubted of them. They were in perplexity about these things. The word translated doubted denotes that state of anxiety which arises when a man has lost his way, or when he does not know what to do to escape from a difficulty. See Luke 9:7.

Whereunto this would grow. What this would be, or what would be the result or end of these events. For:

1. Their authority was disregarded;
2. God had opposed them by a miracle;
3. The doctrines of the apostles were gaining ground;
4. Their efforts to oppose them had been in vain.

They need not have doubted, but sinners are not disposed to be convinced of the truth of religion.