What does the Bible say about Jesus' authority over sickness?

The authority of Jesus over sickness is vividly illustrated in Luke 4:38-39, where He stands over Simon Peter's mother-in-law, rebukes her fever, and it leaves her at once. This demonstrates not only His power but also His ability to command healing instantly without any gradual recovery. The Lord did not approach this situation casually; He acted with purpose and divine authority, emphasizing that only God can perform such miraculous works. This event is a testament to Jesus's divine nature, confirming that He has the power to heal both physically and spiritually.