'Undertaking' in the Bible

And God gave him no heritage in it, not even enough to put his foot on: but he gave him an undertaking that he would give it to him and to his children after him, though he had no child at that time.

But when the time was near for putting into effect the undertaking which God had given to Abraham, the people were increasing in Egypt,

And we are giving you the good news of the undertaking made to the fathers,

And having made Jason and the others give an undertaking to keep the peace, they let them go.

Still, he did not give up faith in the undertaking of God, but was made strong by faith, giving glory to God,

That is, it is not the children of the flesh, but the children of God's undertaking, who are named as the seed.

For this is the word of God's undertaking, At this time will I come, and Sarah will have a son.

Now this I say: The law, which came four hundred and thirty years after, does not put an end to the agreement made before by God, so as to make the undertaking without effect.

What then is the law? It was an addition made because of sin, till the coming of the seed to whom the undertaking had been given; and it was ordered through angels by the hand of a go-between.

However, the holy Writings have put all things under sin, so that that for which God gave the undertaking, based on faith in Jesus Christ, might be given to those who have such faith.

And if you are Christ's, then you are Abraham's seed, and yours is the heritage by the right of God's undertaking given to Abraham.

Now the son by the servant-woman has his birth after the flesh; but the son by the free woman has his birth through the undertaking of God.

Now we, brothers, as Isaac was, are the children of the undertaking of God.

But this man, who was not of their family, took the tenth from Abraham, and gave a blessing to him to whom God had given his undertaking.