Leon Morris emphasizes that a true Christian, having been reborn and created anew, experiences a joy that transcends earthly circumstances, rooted in their identity 'in Christ.' This joy leads to a spirit of continual prayer, reflecting a deep dependence on God and His presence in their lives. Morris encourages believers to recognize God's purpose in all events, fostering an attitude of gratitude even in challenging times. The call to rejoice, pray, and give thanks is a hallmark of the Christian life, as believers focus on their spiritual riches rather than earthly struggles.