According to the book of Mark, shortly after the Lord calls Simon, Andrew, James, and John, to follow Him, Yeshua enters the synagogue at Capernaum, near the Sea of Galilee. It is the Sabbath and Yeshua begins teaching with great authority, amazing everyone.
Now, having recently come through 40 days and nights of fasting and testing in the wilderness followed by His immersion by John, which essentially kicked off Yeshua’s active public ministry season, Yeshua’s casting out of the unclean spirit at Capernaum is one of the first public counterstrikes we see the Messiah engage in against the enemy’s fallen kingdom. The public humiliation and shaming of this supernatural fallen kingdom had now commenced as the Kingdom of God began to draw ever near.
Thus, Yeshua’s newly public and authoritative teaching and presence in the synagogue at Capernaum that day clearly provoked the manifestation of a demonized man that was in attendance. . . .