Since this was sent on Shabbat it reminded me of the zeal which we should have in honoring and guarding Shabbat.  It reminded me of Deuteronomy 4:24:

For the LORD your God is a consuming fire, a jealous God.

and also of Acts 21:20

And when they heard it they began glorifying God; and they said to him, "You see, brother, how many thousands there are among the Jews of those who have believed, and they are all zealous for the Law;

So, too, may we glow with the passion and zeal for Torah and for Shabbat that God has placed within us and in so doing may we be a light unto all the nations.