Cross reference
Romans 16:14
14 Greet Asyncritus, Phlegon, Hermes, Patrobas, Hermas, and the brothers{The word for "brothers" here and where context allows may also be correctly translated "brothers and sisters" or "siblings."} who are with them.
Romans 8:29
29 For whom he foreknew, he also predestined to be conformed to the image of his Son, that he might be the firstborn among many brothers.{The word for "brothers" here and where context allows may also be correctly translated "brothers and sisters" or "siblings."}
Colossians 1:2
2 to the saints and faithful brothers{The word for "brothers" here and where context allows may also be correctly translated "brothers and sisters" or "siblings."} in Christ at Colossae: Grace to you and peace from God our Father, and the Lord Jesus Christ.
Hebrews 3:1
1 Therefore, holy brothers, partakers of a heavenly calling, consider the Apostle and High Priest of our confession, Jesus;
1 Peter 1:22-23
22 Seeing you have purified your souls in your obedience to the truth through the Spirit in sincere brotherly affection, love one another from the heart fervently:
23 having been born again, not of corruptible seed, but of incorruptible, through the word of God, which lives and remains forever.