Here are 4 Bible verses about the power of God from the Old and New Testaments of the Holy Bible (King James Version), sorted from most to least relevant.
Luke 1:35 KJV
And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God.
Luke 24:49 KJV
And, behold, I send the promise of my Father upon you: but tarry ye in the city of Jerusalem, until ye be endued with power from on high.
Luke 6:19 KJV
And the whole multitude sought to touch him: for there went virtue out of him, and healed them all.
Luke 5:17 KJV
And it came to pass on a certain day, as he was teaching, that there were Pharisees and doctors of the law sitting by, which were come out of every town of Galilee, and Judæa, and Jerusalem: and the power of the Lord was present to heal them.