And I will put My spirit within you… – Ezekiel 36:27

One of the first effects of the Spirit of God being put within us is quickening. We are dead by nature to all heavenly and spiritual things; but when the Spirit of God comes, then we begin to live. The man visited of the Spirit begins to feel; the terrors of God make him tremble, the love of Christ makes him weep. He begins to fear, and he begins to hope: a great deal of the first and a very little of the second, it may be. He learns spiritually to sorrow: he is grieved that he has sinned, and that he cannot cease from sinning. He begins to desire that which once he despised: he specially desires to find the way of pardon, and reconciliation with God. Ah, dear hearers! I cannot make you feel, I cannot make you sorrow for sin, I cannot make you desire eternal life; but it is all done as soon as this is fulfilled by the Lord, “I will put My spirit within you.” The quickening Spirit brings life to the dead in trespasses and sins.

This life of the Spirit shows itself by causing the man to pray. The cry is the distinctive mark of the living child. He begins to cry in broken accents, “God be merciful to me.” At the same time that he pleads, he feels the soft relentings of repentance. He has a new mind towards sin, and he grieves that he should have grieved his God. With this comes faith; perhaps feeble and trembling, only a touch of the hem of the Saviour’s robe; but still Jesus is his only hope and his sole trust. To Him he looks for pardon and salvation. He dares to believe that Christ can save even him. Then has life come into the soul when trust in Jesus spring up in the heart. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2200.cfm