Matthew 12:50
For whoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother.
Nave's Topical Index—AKJV

Matthew 25:40
And the King shall answer and say to them, Truly I say to you, Inasmuch as you have done it to one of the least of these my brothers, you have done it to me.
Nave's Topical Index—AKJV

Hebrews 2:11,12 .Used by disciples
For both he that sanctifies and they who are sanctified are all of one: for which cause he is not ashamed to call them brothers,
Nave's Topical Index—AKJV