Acts 23:16 in the World English Bible
But Paul’s sister’s son heard they were lying in wait, and he came and entered into the barracks and told Paul.
Context
15 Now therefore ye with the council signify to the chief captain that he bring him down unto you to morrow, as though ye would enquire something more perfectly concerning him: and we, or ever he come near, are ready to kill him.
16 And when Paul’s sister’s son heard of their lying in wait, he went and entered into the castle, and told Paul.
17 Then Paul called one of the centurions unto him, and said, Bring this young man unto the chief captain: for he hath a certain thing to tell him.