'Number' in the Bible

So they got up and crossed over by number: twelve belonging to Benjamin and to Ish-bosheth son of Saul, and twelve from the servants of David.

David again assembled all the best men in Israel, thirty thousand in number.

My advice therefore is this: Let all Israel from Dan to Beer Sheba -- in number like the sand by the sea! -- be mustered to you, and you lead them personally into battle.

Joab reported the number of warriors to the king. In Israel there were 800,000 sword-wielding warriors, and in Judah there were 500,000 soldiers.