For the law was given by Moses, but grace and truth came by Jesus Christ. – John 1:17

Christian men hold themselves bound to keep all God’s precepts; but the reason why they do so is not because the law is binding upon them, but because the gospel constrains them; they believe that, having been redeemed by blood divine, having been purchased by Jesus Christ, they are more bound to keep His commands, than they would have been if they were under the law; they hold themselves to be ten thousand fold more debtors to God, than they could have been under the Mosaic dispensation. Not of force; not of compulsion; not through fear of the whip; not through legal bondage; but through pure, disinterested love and gratitude to God, they lay themselves out for His service, seeking to be Israelites indeed, in whom there is no guile. This much I have declared lest any man should think that I am preaching works as the way to salvation; I will yield to none in this, that I will ever maintain-that by grace we are saved, and not by ourselves; but equally must I testify, that where the grace of God is, it will produce fitting deeds.

…”Be not deceived; God is not mocked: whatsoever a man soweth, that shall he also reap.” Go away with this one thought, then my brethren, that you can test yourselves by Christ. If you are like Christ, you are of Christ, and shall be with Christ. If you are unlike Him, you have no portion in the great inheritance. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0021.cfm