The Holy Spirit helps believers maintain four types of hearts: 1) A prideless heart by giving humility. 2) A pure heart by enabling one to put sinful desires to death. 3) A passionate heart for God through speaking to each other with spiritual songs and always giving thanks. 4) A prayerful heart by interceding for believers and helping them pray according to God's will. Staying filled with the Spirit ensures one remains blessed and used by God.