Titus 3:5-6 (ESV)
he saved us, not because of works done by us in righteousness, but according to his own mercy, by the washing of regeneration and renewal of the Holy Spirit,
whom he poured out on us richly through Jesus Christ our Savior,
Renewal or revival can only come through the Holy Spirit. We cannot generate or produce it ourselves. It is a sovereign act of God.
2 Thessalonians 2:13 (NLT2)
As for us, we can’t help but thank God for you, dear brothers and sisters loved by the Lord. We are always thankful that God chose you to be among the first to experience salvation—a salvation that came through the Spirit who makes you holy and through your belief in the truth.
Being made holy is this process of Christian growth through which the Holy Spirit makes us like Christ.