Deuteronomy 3:18

And I commanded you at that time, saying, Jehovah your God hath given you this land to take possession of it: ye shall pass over armed before your brethren the children of Israel, all who are combatants.

Joshua 4:12-13

And the children of Reuben, and the children of Gad, and the half tribe of Manasseh, went over in array before the children of Israel, as Moses had spoken to them.

Numbers 32:20-24

And Moses said to them, If ye do this thing, if ye arm yourselves before Jehovah for war,

Joshua 1:12-15

And to the Reubenites and to the Gadites and to half the tribe of Manasseh spoke Joshua, saying,

Joshua 22:1-9

Then Joshua called the Reubenites, and the Gadites, and the half tribe of Manasseh,

Treasury of Scripture Knowledge

Summary

And I commanded you at that time, saying, The LORD your God hath given you this land to possess it: ye shall pass over armed before your brethren the children of Israel, all that are meet for the war.

General references

Bible References

I commanded

Numbers 32:20
And Moses said to them, If ye do this thing, if ye arm yourselves before Jehovah for war,
Joshua 1:12
And to the Reubenites and to the Gadites and to half the tribe of Manasseh spoke Joshua, saying,
Joshua 4:12
And the children of Reuben, and the children of Gad, and the half tribe of Manasseh, went over in array before the children of Israel, as Moses had spoken to them.
Joshua 22:1
Then Joshua called the Reubenites, and the Gadites, and the half tribe of Manasseh,

General references

Numbers 32:17
but we ourselves will go with diligence armed before the children of Israel, until we have brought them to their place; and our little ones shall dwell in the strong cities because of the inhabitants of the land.