Romans 1:13

13 I do not want you to be unaware, brothers,
Or  brothers and sisters. The plural Greek word adelphoi (translated “brothers”) refers to siblings in a family. In New Testament usage, depending on the context, adelphoi may refer either to men or to both men and women who are siblings (brothers and sisters) in God’s family, the church
that b I have often intended to come to you (but c thus far have been prevented), in order that I may reap some d harvest among you as well as among the rest of the Gentiles.
Copyright information for ESV