For there is no difference between the Jew and the Greek: for the same Lord over all is rich unto all that call upon Him. For whosoever shall call upon the name of the Lord shall be saved. – Romans 10:12,13

What does experience say about believing in Christ! Experience says that it is the grandest way of living in the world. I assure you that I daily find the value of living by faith. In hours of dire distress and great heaviness of spirit, of which I know enough, I prove the power of faith in Jesus. Ah, my Lord, what should I do then if I could not as “a poor sinner, and nothing at all” find Christ to be my “all in all.” Fair-weather sailors, who go out in their little painted perfection boats, are people who have had small temptation and little soul-trouble. They are generally gentlemen in good health, with regular incomes and sweet tempers, and so they soon reach their imaginary sinlessness -vain creatures that they are but you never get any of that among the poor, suffering, tried people of God. In stormy weather our beauty and glory soon turn pale; when the devil meets us face to face, he cracks up our tinsel perfection with a blow. He laughs at all our comeliness for he knows that it is a hollow cheat, a vile sham. In the moments when the soul is in the lowest depths, faith is the only way to live…How blessed it is when a child of God has actually fallen into sin, -God keep us so that we never may, -but if guilt is on the soul, what is a poor creature to do? He can do nothing unless he has learned this precious truth, that he is nothing at all, and Jesus Christ is his all in all. Then he knows that Jesus will blot out his transgressions, and create in him a clean heart, and restore him to Himself again, though now, like David, his sin is ever before him.

 When God gives you growth in grace and fruitfulness in good works it will be your safety to be as little as ever you were, and to trust in nothing but the work of the Lord. This blessed faith keeps men down when they are apt to go up, and up when otherwise they would be apt to go down. It is a holy balancing pole: we can walk the narrowest line with this in our hands and fear no fall. Ourselves nothing, Christ everything-that is it. Keep to it. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1700.cfm