The Holy Spirit warms us and melts our cold, cold hearts. The following parable makes the point:

Once upon a time there was a piece of iron, which was very strong and very hard. Many attempts had been made to break it, but all had failed.

“I’ll master it,” said the axe… and his blows fell heavily upon the piece of iron, but every blow only made the axe’s edge more blunt, until it finally ceased to strike and gave up in frustration.

“Leave it to me,” said th…