Jesus had cast out a demon that had power over a mute man.  After Jesus used His power, the man could talk and the crowds that had witnessed the miracle were amazed.
Some in that crowd accused Jesus:
(NASB) Luke 11:15 “…‘He casts out demons by Beelzebul, the ruler of the demons.’”

Others in that crowd demanded Him to prove from where His power came.
(NASB) Luke 11:16 “Others, to test Him, were demanding of Him a sign from heaven.

Jesus addressed the accusation first by stating a premise [A proposition upon which an argument is based or from which a conclusion is drawn]:
(NASB) Luke 11:17 “But He knew their thoughts and said to them, ‘Any kingdom divided against itself is laid waste; and a house divided against itself falls.’”

Jesus followed up with a logical question and restates their accusation:
(NASB) Luke 11:18 “If Satan also is divided against himself, how will his kingdom stand?  For you say that I cast out demons by Beelzebul.”

Jesus then gave His logic behind His premise:
(NASB) Luke 11:19-20 ‘And if I by Beelzebul cast out demons, by whom do your sons cast them out?  So they will be your judges.
20 ‘But if I cast out demons by the finger of God, then the kingdom of God has come upon you.’”

From where do you say that Jesus had His power?
Was it from Satan, the adversary of God?  Or was it from God Himself?
If the power of Jesus came from Satan – that is not logical because Satan’s power would be used against himself.
If the power of Jesus comes from the finger of God…then God’s kingdom has come.

Immanuel ~ God with us.

 We should never underestimate the power of God.  His finger has creating power…Jesus healed a mute man by the power of the finger of God.  The Psalmist stated:
(NASB) Psalm 8:3 “When I consider Your heavens, the work of Your fingers,
The moon and the stars, which You have ordained…”

  Conclusion: the power of Jesus came from the finger of God.  And that power is still active…have you “plugged” into the power that Jesus alone can give you?  If you have, then you have received His life by faith in His power to act in your behalf.  His power over death, sin and Satan was accomplished at the cross outside of Jerusalem.  His power was exhibited when He came back to physical life three days after His death and burial.

His power comes from the finger of God!