Acts 23:16

16 But when the son of Paul’s sister heard of this plot, he went into the barracks and told Paul.

Read Acts 23:16 Using Other Translations

And when Paul's sister's son heard of their lying in wait, he went and entered into the castle, and told Paul.
Now the son of Paul's sister heard of their ambush, so he went and entered the barracks and told Paul.
But Paul’s nephew—his sister’s son—heard of their plan and went to the fortress and told Paul.

What does Acts 23:16 mean?

John Gill's Exposition of the Bible
Acts 23:16

And when Paul's sister's son heard of their lying in wait,
&c.] Paul might have a sister living in Jerusalem; or this her son might be there on account of his studies; he might be a pupil to one of the doctors, by which means he might come at this secret, that such a number of men were in ambush, in order to take away his uncle's life: wherefore having got intelligence of it,

he went and entered into the castle;
the Alexandrian copy reads, "the synagogue"; but Paul was not there, but in the castle of Antonia; the Ethiopic version renders it, "the prison"; though it is plain that he was not very closely confined, it was easy to have access to him; the reason might be, not only because he was a Roman, but because he was uncondemned, nor was any charge proved against him:

and told Paul;
what he had heard, that such a number of men had entered into a conspiracy to take away his life, and lay in wait for him; and this was an instance both of duty and affection to his uncle, and worthy of imitation, whether it proceeded from natural relation, or from religion, or both.

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