Isaiah 39:6 Poor old foolish Hezekiah.

While it is polite to show generosity to your house guests, it's worth checking that they are not going to come back and swipe it all, plus many of your sons, before you do so.

See also 2 Kings 20:12-19.

Of course the lesson is all about Hezekiah's pride, and his self-belief before his trust and witness in God. He was generous and polite in showing his guests around the house... though pride and boastfulness were the true motives.