Question Corner: Why did God send Lucifer down to earth?

I don’t think we can say that God truly sent the devil — also known as Lucifer, or later as Satan — down to earth in quite the way your question envisions. While the devil was cast out of God’s direct presence in heaven, this did not happen because God actively wanted Satan to have sway over his creatures.

Looking for signs and Nineveh

The Gospels are full of the marvelous deeds of Jesus, including how Jonah became a sign to the city of Nineveh. During our 40 days, may we seek to see how God sends us out, like Jonah, to be a sign of Christ’s limitless mercy.