'Proof' in the Bible

Now look, he has invented charges against her by saying, "I haven't found your daughter to be a virgin." But here is the proof of my daughter's virginity.' Then they are to spread the cloth before the elders of the city.

Later that same day, he gave them a special display of power of what was to come when he said, "Here's proof that the LORD has decreed this: Look! This altar will be split apart and the ashes that are on it will spill out."

Also, the altar broke apart and the ashes that were on it spilled out from the altar, providing just the proof that the man of God had predicted in his message from the LORD!