A covenant is an agreement between two people; it will only work if both parties will honor their obligation to it. Therefore it is conditional. God had a covenant with Abraham, from which the nation of Israel was born. The Lord also promised Abraham’s descendants the land of Canaan, from the river of Egypt to the great river Euphrates. When Abraham was tested on the mountain “The Lord will provide,” God blessed him by saying, I have sworn by Myself, says the Lord, that since you have done this and have not withheld or begrudged your son, your only son, in blessing I will bless and in multiplying I will multiply your descendants like the stars of the heavens and like the sand of the seashore. And you Seed will possess the gate of His enemies. And in your Seed [Christ] shall all the nations of the earth be blessed and [by Him] bless themselves, because you have heard and obeyed My voice (Gen. 22:17-18). Although Abraham kept the covenant between God and him, his descendants did not; reason why they lost their beautiful Promised Land covenanted with them, conditionally upon their keep of the contract.
Light from the Word 