And when Paul's sister's son heard of their lying in wait, he went and entered into the castle, and told Paul.
Note 2 at Ac 23:16: This is one of the few times Paul's family is mentioned in Scripture. It appears that Paul's nephew had received salvation through Jesus, or at least, he was not hostile toward it, as the nonbelieving Jews were.
Also in Ro 16, Paul mentioned a number of his kinsmen. He specifically mentioned Andronicus and Junia, who were born again before Paul (Ro 16:7) and also imprisoned for their faith in Christ. Herodion was also a relative of Paul's and one of the believers in Rome (Ro 16:11). In Ro 16:13, Paul saluted Rufus and stated that Rufus' mother was his mother also. This could be speaking figuratively, or it could literally be a reference to Paul's mother and brother Rufus being believers.
In Ro 16:21, Paul used the word "kinsmen" after listing several men. It is not clear which of these men he was referring to as his kinsmen.