Paul wrote to the beleaguered church in Colossae to encourage and remind them to trust and rely solely on Jesus, because all power and authority belong to Him. [Colossians 1: 15-20]
John sent words of encouragement to a struggling church, that God is love, and who showed His love by sending His Son Jesus to die as an atoning sacrifice for our sins, so that we could be reconciled to God and saved from eternal separation from Him. And that we in turn should love one another. [1 John 4: 7-21]