'Promised' in the Bible

This is the sign to you from the Lord that He will do what He has promised:

“I have not spoken in secret,In a corner of a land of darkness;I did not say to the descendants of Jacob,‘Seek Me in vain [with no benefit for yourselves].’I, the Lord, speak righteousness [the truth—trustworthy, a straightforward correlation between deeds and words],Declaring things that are upright.

Pay attention to me, come to me; and listen, so that you may live; then I'll make an everlasting covenant with you, as promised by my faithful, sure love for David.

Then you will take pleasure in the Lord,And I will make you ride on the high places of the earth,And I will feed you with the [promised] heritage of Jacob your father;For the mouth of the Lord has spoken.”