Here's the opportunity to learn what Shabbos requires of you:
"Ki simachtani Hashem bufo'olecho" -- You made me happpy. It means you looked at the deeds of Hashem in the world, and you're so excited over them that you sing, "buma'asei yodecho aranein"-- I'll sing at the deeds of Your hand!"
That's one of the functions of Shabbos. -- Preface to Shabbos 3 (253)