Revelation 7:5
Of the tribe of Juda were sealed twelve thousand. Of the tribe of Reuben were sealed twelve thousand. Of the tribe of Gad were sealed twelve thousand.
Exodus 1:2-4
Reuben, Simeon, Levi, and Judah,
Numbers 1:4-15
And with you there shall be a man of every tribe, every one head of the house of his fathers.
Numbers 10:14-27
In the first place went the standard of the camp of the sons of Judah according to their armies, and over his host was Nahshon, the son of Amminadab.
Numbers 13:4-16
And these were their names: of the tribe of Reuben, Shammua, the son of Zaccur.
1 Corinthians 2:1-2
And I, brothers, when I came to you, came not with puffed up speech or wisdom to declare unto you the testimony of God.