2 Samuel 17:10-11

17:10 If that happens even the bravest soldier – one who is lion-hearted – will virtually melt away. For all Israel knows that your father is a warrior and that those who are with him are brave. 17:11 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.