And I will bring you in unto the land, concerning the which I did swear to give it to Abraham, to Isaac, and to Jacob; and I will give it you for an heritage: I am the LORD. -Exodus 6:8

“God made a covenant with us poor brickmakers, that have to slave from morning to night without wage, and now are forced to make bricks without straw?” God and a covenant: these are strange words in ears that hear the curses of taskmasters and the crack of their whips. It sounded like mockery to them to talk of such high matters. I doubt not they muttered to themselves, “This Moses is a mad philosopher who has grand mouthfuls of words; but what are words to us? A bit of fish out of the Nile, or a cumber from the irrigated fields would be a deal better than talking to us about a covenant.” And yet, hearken. If any of you are in a sad condition, your best hopes may lie this way. What if God has entered into covenant with you that He will bless you for Jesus Christ’s sake? There may be a mint of wealth for the sons of poverty in this everlasting covenant; and the best kind of wealth, too. There may be for you a promised emancipation which will break the fetters which now hold you, and set you free. I tell you that in the covenant of grace lies the charter of the poor and needy. At any rate, if you come under that covenant it cannot be worse with you than it is now. You seem now to be under a covenant of bondage and of sorrow, and any change will be for the better. If there be another covenant-a covenant of grace, and love, and peace, and everlasting faithfulness, it were worth while to hear about it, and to seek it out until you discover whether you have part and lot in it. I entreat you, look into this matter. Hearken diligently to the voice of the gospel. Hear, and your soul shall live. ~ C,H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2026.cfm