I struggled a bit with today's reading. I struggled to find something to write about. What is the message in today's reading? After meditating for a while, I think I found one.
I feel the message in today's reading (at least one message) concerns the sin of pride.
Herod gave a speech to the people of Tyre and Sidon. After that speech, per verses 22 & 23, "They shouted, 'This is the voice of a god, not of a man.' Immediately, because Herod did not give praise to God, an angel of the Lord struck him down ..." In his writing, Luke certainly implies that Herod had the opportunity to deny what the people were shouting. Failing to do so Herod was struck down by God.
Pride is a sin that can cause a person to behave in their own best interest and not in the interest of God. Have you ever done something because you wanted the praise that would come from the act and not because you wanted to advance God's will? I know I have. Sure the act would advance God's will but the motive was wrong. With an incorrect attitude that act may not further God's will as much as it could have. If we divert our attention away from the act, even just a little bit, towards how this act can make me look good, then that loss of attention may result is a less than (perhaps slightly less than) optimum result.
From today's reading pride is obviously a very serious sin. It was so serious in Herod's case that God chose to punish it right then and there. Please, and this is much easier said than done, do not let your pride get in the way of furthering God's will. As the Bible says, if you get an earthly reward for your act, then that is your reward; however, it is much better to receive no earthly reward and thus a heavenly reward.