Charles Ellicott Commentary Numbers 32:17

"but we ourselves will be ready armed to go before the children of Israel, until we have brought them unto their place: and our little ones shall dwell in the fortified cities because of the inhabitants of the land." — Numbers 32:17 (ASV)

Will go ready armed ... — Or, will equip ourselves in haste.

And our little ones shall dwell ... — The word taph, which is here rendered “little ones,” appears to include all the defenceless portion of the nation. (See Exodus 12:37.)