'Miracle' in the Bible

Then some of the scribes and Pharisees said to Him, “Teacher, we want to see a sign (attesting miracle) from You [proving that You are what You claim to be].”

Now the Pharisees and Sadducees came up, and testing Jesus [to get something to use against Him], they asked Him to show them a sign from heaven [which would support His divine authority].

"I solemnly tell you," said Jesus, "that if you have an unwavering faith, you shall not only perform such a miracle as this of the fig-tree, but that even if you say to this mountain, 'Be thou lifted up and hurled into the sea,' it shall be done;