But the scripture hath concluded all under sin, that the promise by faith of Jesus Christ might be given to them that believe. – Galatians 3:22

There are many persons who think that the curse of God upon those who are undeniably wicked is, of course, right; but that the curse of God upon those who for the most part appear to be excellent, and who may have sinned but once, as an act of injustice. We answer, “Nay, when God pronounces the curse, He doth it justly; He is a God of justice; ‘just and right is He.'” And mark thee, man, if thou art condemned, it shall be by the strictest justice; and if thou hast sinned but once, the curse is righteous when it lights upon thy head. Dost thou ask me how this is? I answer, Thou sayest thy sin is little; then, if the sin be little, how little trouble it might have taken thee to have avoided it! If thy transgression be but small, at how small an expense thou mightest have refrained from it! Some have said, “Surely the sin of Adam was but little; he did but take an apple.” Ay, but in its littleness was its greatness. If it was a little thing to take the fruit, with how little trouble might it have been avoided! And because it was so small an act, there was couched within it the greater malignity of guilt. So, too, thou mayest never have blasphemed thy God, thou mayest never have desecrated His Sabbath; yet, insomuch as thou hast committed a little sin, thou art justly condemned, for a little sin hath in it the essence of all sin; and I know not but that what we call little sins may be greater in God’s sight than those which the world universally condemns, and against which the hiss of the execration of humanity continually rises. I say, God is just, although from His lips should rush thunders to blast the entire universe; God is just, although He curses all. Tremble, man, and “kiss the Son, lest He be angry, and ye perish by the way, when His wrath is kindled but a little. Blessed are all they that put their trust in Him.”~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3254.cfm