And you hath He quickened, who were dead in trespasses and sins… – Ephesians 2:1

No man ever made himself to live. No preacher, however earnest, can make one hearer to live. No parent, however prayerful, no teacher, however tearful, can make a child live unto God. “You hath HE quickened,” is true of all who are quickened. It is a divine spark, a light from the great central Sun of light, the great Father of Lights. Is it so with us? Have we had a divine touch, a superhuman energy, a something which all the learning and all the wisdom and all the godliness of man could never work in us? Have we been quickened from above? If so, I daresay that we remember something of it. We cannot describe it; no man can describe his first birth; it remains a mystery. Neither can he describe his new birth; that is still a greater mystery, for it is a secret inward work of the Holy Ghost, of which we feel the effect, but we cannot tell how it is wrought.

If a person had never lived before, and had come into life a full-grown man, everything would be as strange to him as it is to a little child; and everything is strange to a new-born man in the spiritual realm into which he is born. He is startled a hundred times. Sin appears as sin; he cannot understand it. He had looked at sin before but had never seen it to be sin. And Christ appears now so glorious to him; he had heard of Christ before and had some apprehensions of Him; but now he is surprised to find that the One who he said had no form nor comliness is, after all, altogether lovely. To the new-born soul everything is a surprise. He makes no end of blunders; he makes many miscalculations because everything is new to him. He that sitteth upon the throne saith, “Behold, I make all things new;” and the renewed man says, “My Lord, it is even so.” ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2267.cfm