Numbers 32:17

but, we, would arm ourselves promptly, before the sons of Israel, until that we have brought them into their place, - so should our little ones remain in the fortified cities, because of the inhabitants of the land.

Joshua 4:12-13

Also the sons of Reuben and the sons of Gad and the hall tribe of Manasseh, passed over, armed, before the sons of Israel, - as Moses had spoken unto them:

Numbers 32:29-32

and Moses said unto them - If the sons of Gad and the son of Reuben will pass with you over the Jordan, every one armed for the war before Yahweh, and the land be subdued before you, then shall ye give unto them the land of Gilead, for a possession.

Deuteronomy 3:18-20

So I commanded you, at that time saying, - Yahweh your God hath given unto you this land to possess it, armed, shall ye pass over before your brethren the sons of Israel all the sons of valour,

Treasury of Scripture Knowledge

Summary

But we ourselves will go ready armed before the children of Israel, until we have brought them unto their place: and our little ones shall dwell in the fenced cities because of the inhabitants of the land.

Bible References

General references

Numbers 32:29
and Moses said unto them - If the sons of Gad and the son of Reuben will pass with you over the Jordan, every one armed for the war before Yahweh, and the land be subdued before you, then shall ye give unto them the land of Gilead, for a possession.
Deuteronomy 3:18
So I commanded you, at that time saying, - Yahweh your God hath given unto you this land to possess it, armed, shall ye pass over before your brethren the sons of Israel all the sons of valour,
Joshua 4:12
Also the sons of Reuben and the sons of Gad and the hall tribe of Manasseh, passed over, armed, before the sons of Israel, - as Moses had spoken unto them: