The Importance of Lyrics

I was just at studio hanging, I'm working on this. And I couldn't come up with words, but I had this melody. So he takes that melody and just adds words and sings it right. It just worked out so perfectly. How important are the words? I like beat first, then melody, and then lyrics. That's what really makes me know. Then I care about what sounds are based on the sound that everything makes 100%.