Riddles and Trivia

And after reading Rashi’s commentary to a certain verse in parshas Bechukosai, Levi looked at the door of the Beis Medrash and said, “Hmm...interesting! If I enter and join others in learning Torah here, not only will my learning be a mitzva, I will also raise the power of Torah of everyone who is in this Beis Medrash right now!”
Which verse did Levi look at?
[Hint: Review Rashi’s commentary on parshas Bechukosai]