In the Old Testament the tribes differed considerably in size and therefore in what they could contribute to the well being of Israel as a whole. But when it comes to receiving the mark that allows one to stand in the day of judgment, contribution or size or value counts for nothing. Whatever anyone receives is a gift; it is grace.
5 12,000 from the tribe of Judah were sealed, 12,000 from the tribe of Reuben, 12,000 from the tribe of Gad,