How do we know Christ's power over demons is true?

The validity of Christ’s power over demons is established in the Gospels through numerous accounts, notably in Matthew 12, where He casts out a devil with merely a word. This act signals not only His authority over evil spirits but demonstrates His unique role as the stronger man who can bind the strong man, Satan. The recognition by demons themselves that they must submit to Him further confirms His supremacy. When confronted by Jesus, demons acknowledged His power, mercilessly fleeing at His command. Therefore, the repeated manifestation of His authority over demon possession across the Gospel narratives stands as historical evidence of Christ's unparalleled power against the forces of darkness.