What does the Bible say about healing through preaching?

In Luke 4:38-39, we see the account of Simon's mother-in-law being healed by Jesus after He was besought by those concerned for her. This passage illustrates a profound connection between the preaching of the gospel and the healing of both physical and spiritual ailments. Throughout Scripture, preaching is presented as the means through which God communicates His power and truth. The Lord Jesus Himself emphasized the importance of preaching as part of His earthly ministry, stating, 'I must preach the kingdom of God to other cities also, for therefore am I sent' (Luke 4:43). This indicates a divine purpose behind preaching, which results not only in spiritual healing but also manifests in physical healings when it pleases God.