Both Mark 1:21-28 and Luke 4:31-37 give accounts of a man in the synagogue of Capernaum, plagued by evil spirits, or demons. Modern science and medicine may deny the reality of spiritual influences affecting humans, but the Bible teaches the existence of demons. They also can cause physical problems and diseases, but not all diseases or abnormal behaviors are spiritually caused. Demon spirits were extremely uncomfortable in the presence of the Lord Jesus Christ, and, at times, made themselves known. Since both Mark and Luke are virtually identical, only the record in Luke will be considered here.
Jesus had just opened His public ministry in Nazareth, where he read from the scroll of Isaiah. “The Spirit of the LORD is upon Me, because He has anointed Me to preach the gospel to the poor; He has sent Me to heal the brokenhearted, to proclaim liberty to the captives and recovery of sight to the blind, to set at liberty those who are oppressed; to proclaim the acceptable year of the LORD.” The people in Nazareth utterly rejected Jesus, thinking He was the illegitimate son of Joseph and Mary. Jesus confronted their rank unbelief, and said, among other things, “… no prophet is accepted in his own country.” The people were infuriated and led Him up a hill to throw Him over the cliff, but “passing through the midst of them, He went His way.”
He went down to Capernaum, a city of Galilee, where He would eventually live, and He taught regularly in the synagogue on the Sabbaths. The people of Capernaum were astounded at His teaching because He spoke with authority. One time in the synagogue “there was a man who had a spirit of an unclean demon.” While Jesus was speaking, the man loudly shouted, “Let us alone! What have we to do with You, Jesus of Nazareth? Did You come to destroy us? I know who You are—the Holy One of God!” Even evil spirits knew who Jesus Christ was, and were terrified of Him. They knew Jesus had the power and authority to cast them out, which is exactly what Jesus did. He told the spirit to shut up and get out. “Be quiet, and come out of him!” In its last act of rebellion, the spirit convulsed the man. “And when the demon had thrown him in their midst, it came out of him and did not hurt him.”
It's not said or implied that Jesus did anything dramatic, or that He shouted and made a big scene. He simply took charge and set the man free from the spirit who had plagued him. Nothing is recorded about the man’s reaction, but the people in the synagogue were certainly impressed. “And they were all amazed and spoke among themselves, saying, ‘What a word this is! For with authority and power He commands the unclean spirits, and they come out.’”
Everywhere Jesus went, He always did the will of God. He educated people in the Word of God, ministered healing wholeness to people, and “set at liberty those who are oppressed…” Similar to Luke 4:37, Mark 1:28 states, “And immediately His fame spread throughout all the region around Galilee.”