Revelation 6:11

6:11 A long white robe was given to each of them. They were told that they should rest yet for a while, until their fellow servants and their brothers,{The word for "brothers" here and where context allows may also be correctly translated "brothers and sisters" or "siblings."} who would also be killed even as they were, should complete their course.
-World English Bible

Other Translation

6:11 And white robes were given unto every one of them; and it was said unto them, that they should rest yet for a little season, until their fellowservants also and their brethren, that should be killed as they [were], should be fulfilled.
-King James Version