Regeneration is an instantaneous work.
Conversion to God, the fruit of regeneration, occupies all our life, but regeneration itself is effected in an instant.
A man hates God– the Holy Spirit makes him love God.
A man is opposed to Christ, he hates his gospel, does not understand it and will not receive it – the Holy Spirit comes, puts light into his darkened understanding, takes the chain from his bondaged will, gives liberty to his conscience, gives life to his dead soul, so that the voice of conscience is heard, and the man becomes a new creature in Christ Jesus.
And all this is done, mark you, by the instantaneous supernatural influence of God the Holy Spirit working as he wills among the sons of men.
C. H. Spurgeon (1834 – 1892)