'Work' in the Bible

And He could not do a miracle there at all [because of their unbelief] except that He laid His hands on a few sick people and healed them.

King Herod [Antipas] heard about this, for Jesus’ name and reputation had become well known. People were saying, “John the Baptist has been raised from the dead, and that is why these miraculous powers are at work in Him.”

But Jesus said, “Do not stop him; for there is no one who will perform a miracle in My name, and be able soon afterward to speak evil of Me.

for false Christs and false prophets will arise, and they will provide signs and wonders in order to deceive, if [such a thing were] possible, even the elect [those God has chosen for Himself].