Why is quickening by the Holy Spirit essential for Christians?

Quickening is a work of God the Holy Spirit that transforms a believer from spiritual death to life. As stated in Ephesians, we were dead in our trespasses and sins, but God quickens us to make us alive in Christ. This regeneration is the beginning of our spiritual journey, as it opens our eyes to see spiritual truths, ignites a hunger for God's Word, and fosters a desire to worship and serve Him. Without this divine act, a person cannot engage in true faith and understanding of God’s grace.