These three guys had mad faith. They had great faith because they were so confident in God. They knew that they served a faithful God, one who will save them even when it didn’t look like it to the majority.
We can have bold faith, but we need to back it up with truly believing that whatever the outcome may be, God is good all the time. Unbelievers might call it crazy, but when we know God is madly in love with us, we are certain that our mad faith will move mountains.