II Kings 20:15 And he said, What have they seen in thine house? And Hezekiah answered, All the things that are in mine house have they seen: there is nothing among my treasures that I have not shewed them.
Hezekiah was probably pretty proud of all that God had done for him. When his guests came he showed them everything that he had. This was a major mistake because one day those who saw it all would come back to steal it.
I am afraid that often we show too much and tell too much. People then use that to hurt us. We might mean it for good, thinking that we are helping or praising God.
A lesson for me from this verse is to be more careful with what God has given me!