'Business' in the Bible

When you have stayed three days, you shall go down quickly, and come to the place where you did hide yourself when the business was in hand, and shall remain by the stone Ezel.

David said to Ahimelech the priest, "The king has commanded me a business, and has said to me, 'Let no man know anything of the business about which I send you, and what I have commanded you; and I have appointed the young men to such and such a place.'

David said to Ahimelech, "Isn't there here under your hand spear or sword? For I have neither brought my sword nor my weapons with me, because the king's business required haste."