Maybe it was an interrobang

The messianic, lordly, and kingly confession of Jesus is not incidental to the Bible. It is the point of the Bible, and the gospel is the good news that Jesus is that Messiah, that Lord, and that King. We are his subjects. The question over and over in the Bible is: “Who is the rightful Lord of this cosmic temple?” The answer shifts in the pages of Israel’s Story until it comes to Jesus, and we get not a full stop but an exclamation point: Jesus is the Messiah and Lord!

Yes, the problem is our sin; yes, we need to be forgiven of sinfulness and our sins. But that sin and that forgiveness are connected to our lordly assignments and to our priestly responsibilities and to our flailing and failing attempts to usurp God’s tasks to make them ours. The only one worthy to sit on that throne is King Jesus.— The King Jesus Gospel, pages 141-142

<idle musing>
It definitely is an exclamation point, but I also think an interrobang accurately expresses the surprise that most felt at what God has done. My own response when I encountered the unconditional love, forgiveness, and new life in Christ was definitely an interrobang—"He loves me?" and, "He loves me!" in a cosmic mash-up whose repercussions are still being felt in my life 42 years later. Praise to Him!
</idle musing>