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

“And you hath He quickened, who were dead in trespasses and sins… God, who is rich in mercy, for His great love wherewith He loved us, even when we were dead in sins, hath quickened us together with Christ.” – Ephesians 2:1, 4

Here is the point. God has quickened us, who were dead in trespasses and sins, spiritually dead. We were full of vigour towards everything which was contrary to the law or the holiness of God, we walked according to the course of this world; but as for anything spiritual, we were not only somewhat incapable, and somewhat weakened; but we were actually and absolutely dead. We had no sense with which to comprehend spiritual things. We had neither the eye that could see, nor the ear that could hear, nor the power that could feel… We have many who are lovely, amiable, morally admirably, like him whom the Saviour looked upon and loved; yet they are dead for all that. We have others who are drunken, profane, unchaste; they are dead, not more dead than the others; but their death has left its terrible traces more plainly visible. Sin brings forth death, and death brings forth corruption. Whether we were corrupt or not, is not a question that I need to raise here; let everyone judge concerning himself. But dead we were, most certainly. Even though trained by godly parents, though well instructed in the gospel scheme, though saturated with the piety that surrounded us, we were dead, as dead as the harlot of the street, as dead as the thief in the jail.

Now, the text tells us that, though we were dead, yet Christ has come, and by His Spirit He has raised us out of the grave…If you have been quickened, even though your life be feeble, you may cry to the living God with the “Abba, Father,” which never comes from any lip but that which has been touched and quickened by the Holy Spirit. ~ C.H. Spurgeon

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