'Agreement' in the Bible

Then Abner sent messengers to David saying, "To whom does the land belong? Make an agreement with me, and I will do whatever I can to cause all Israel to turn to you."

So David said, "Good! I will make an agreement with you. I ask only one thing from you. You will not see my face unless you bring Saul's daughter Michal when you come to visit me."

So Abner told David, "Give me permission to go out and rally all of Israel to your majesty the king so they can enter into a formal agreement with you to reign over everything that your heart desires." So David sent Abner off, and he went away in peace.

When all the leaders of Israel came to the king at Hebron, King David made an agreement with them in Hebron before the Lord. They designated David as king over Israel.

Then Zadok came, and Abiathar, and with them the ark of God's agreement: and they put down the ark of God, till all the people from the town had gone by.

For is not my house so with God? For he has made with me an eternal agreement, ordered in all things and certain: as for all my salvation and all my desire, will he not give it increase?