Luke
Acts 15:13ESV·traditional attribution

After they finished speaking, James replied, “Brothers, listen to me.

John Calvin Reformed @genevareformer

13. James answered, saying. Some old writers of the Church think that this James was one of the disciples, whose surname was Justus and Oblia, whose cruel death is recorded by Josephus in the Twentieth Book of his Antiquities. But would to God the old writers had travailed rather to know the man, than to set forth, with reigned praises, the holiness of a man whom they knew not.

Matthew Henry Presbyterian @wholebiblehenry

We have here a council called, not by writ, but by consent, on this occasion (Act 15:6): The apostles and presbyters came together, to consider this matter. They did not give their judgment separately, but came together to do it, that they might hear one another's sense in this matter; for in the multitude of counsellors there is safety and satisfaction.

Commenting on Acts 15:6-21

John Gill Reformed Baptist @doctorgill

And after they had held their peace,.... Meaning not the multitude, but Paul and Barnabas; when they had finished their account, and had done speaking: James answered; or rose up, as the Syriac version reads, he stood up and began to speak.