But now in Christ Jesus you who once were far off have been brought near by the blood of Christ. -Ephesians 2:13

Oh! I love the gospel, for this reason among others, because it is such a leveling gospel. Some persons do not like a leveling gospel; nor would I, in some senses of the word. Let men have their rank, and their titles, and their riches, if they will; but I do like, and I am sure all good men like, to see rich and poor meet together and feel that they are on a level; the gospel makes them so. It says “Put up your money-bags, they will not procure you remission; roll up your diploma, that will not get you remission; forget your farm and your park, they will not get you remission; just cover up that escutcheon, that coat of arms will not get you remission. Come, you ragged beggars, filthy off-scourings of the world, penniless; come hither; here is remission as much for you, ill-bred and ill-mannered though ye be, as for the noble, the honorable, the titled, and the wealthy. All stand on a level here; the text is universal: “Without shedding of blood there is no remission.”

Never, though you strained yourselves in prayer; never, though you wept yourselves away in tears; never, though you groaned and cried till your heart-strings break; never in this world, nor in that which is to come, can the forgiveness of sins be procured on any other ground than redemption by the blood of Christ, and never can the conscience be cleansed but by faith in that sacrifice. The fact is, beloved, there is no use for you to satisfy your hearts with anything less than what satisfied God the Father. Without the shedding of blood nothing would appease His justice; and without the application of that same blood nothing can purge your consciences.~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0118.cfm

Nevertheless what does the Scripture say? “Cast out the bondwoman and her son, for the son of the bondwoman shall not be heir with the son of the freewoman. So then, brethren, we are not children of the bondwoman but of the free.” – Galatians 4:30. 31

Hagar was cast out, as well as her son; but Sarah never was. So the covenant of works has ceased to be a covenant. Not only have the people been cast away who trusted in it, not simply was Ishmael cast out, but Ishmael’s mother too. So the legalist may not only know himself to be damned, but the law as a covenant has ceased to be, for mother and son are both driven out by the gospel, and those who trust in law are sent away by God. You ask today who is Abraham’s wife? Why Sarah; does she not sleep side by side with her husband in the Machpelah’s cave at this instant? There she lies, and if she lie there for a thousand years to come, she will still be Abraham’s wife, while Hagar never can be. Oh, how sweet to think, that the covenant made of old was in all things ordered well, and never, never shall be removed. “Although my house be not so with God, yet hath He made with me an everlasting covenant, ordered in all things and sure.” Ah! ye legalists, I do not wonder that ye teach the doctrine of falling away, because that is consistent with your theology. Of course, Hagar has to be driven out, and Ishmael too. But we who preach the covenant of free and full salvation know, that Isaac never shall be driven out, and that Sarah never shall cease to be the friend and wife of Abraham. Ye Hagarenes! ye ceremonialists! ye hypocrites! ye formalists! of what avail will it be, when at last ye shall say, “Where is my mother? Where is my mother, the law?” Oh! she is driven out, and thou mayest go with her into eternal oblivion. But where is my mother? the Christian can say at last; and it will be said, “There is the mother of the faithful, Jerusalem above, the mother of us all; and we shall enter in, and dwell with our Father and our God.”~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0069.cfm

…which things are symbolic. For these are the two covenants: the one from Mount Sinai which gives birth to bondage, which is Hagar—…but the Jerusalem above is free, which is the mother of us all. -Galatians 4: 24, 26

The first covenant for which Hagar stands, is the covenant of works, which is this: “There is my law, O man; if thou on thy side wilt engage to keep it, I on my side will engage that thou shalt live by keeping it. If thou wilt promise to obey my commands perfectly, wholly, fully, without a single flaw, I will carry thee to heaven. But mark Me, if thou violatest one command, if thou dost rebel against a single ordinance, I will destroy thee for ever.” …The Sarah covenant is the covenant of grace, not made with God and man, but made with God and Christ Jesus, which covenant is this: “Christ Jesus on His part engages to bear the penalty of all His people’s sins, to die, to pay their debts, to take their iniquities upon His shoulders; and the Father promises on His part that all for whom the Son doth die shall most assuredly be saved; that seeing they have evil hearts, He will put His law in their hearts, that they shall not depart from it, and that seeing they have sins, He will pass (these sins) by and not remember them any more for ever.”…There are no conditions whatever in the covenant of grace, or if there be conditions, the covenant gives them. The covenant gives faith, gives repentance, gives good works, gives salvation, as a purely gratuitous unconditional act; nor does our continuance in that covenant depend in the least degree on ourselves. The covenant was made by God with Christ, signed, sealed, and ratified, in all things ordered well.~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0069.cfm