The story of Naboth's vineyard and the absolute cruelty of Ahab and Jezebel has always resonated with me. The absolute injustice of it all is shocking to us. Imagine Naboth's wife - losing her husband, and (according to 2 Kings 9:26) her sons to a charge that was completely false - so devastating!
But we serve a God of justice. And because Ahab destroyed Naboth's inheritance, God would destroy Ahab's inheritance and destroy his family line. We won't always see earthly justice, but we are guaranteed eternal justice.
Thankfully, we also serve a God of mercy. After all, we have all acted unjustly. No, not to the extent that Ahab did, but unjustly all the same. It's a difference in degree, not in kind. God was willing to extend mercy to Ahab - but his repentance was superficial and short lived. The good news is, that if God was willing to extend mercy to Ahab, a man of horrendous evil, He is also willing to extend mercy to us.
In our NT passage we see Jesus reply to John's question with, as Ray van der Laan explains, a remez. Generally, a remez is a way of quoting a bible passage in such a way as to emphasize the portion you omitted. In Isaiah, it is prophesied numerous times that the Messiah would make the blind see, the lame walk, lepers cleansed, deaf healed, and the prisoners set free. Except Jesus did not quote the portion about the release of the prisoners - telling John that, though Jesus was indeed the Messiah, John would not be released as he expected, but that he would die in prison.
Tomorrow's Bible In a Year Passage passage: 2 Kings 1-3; Matthew 12:1-23