And it was for this reason that the nations of the world were solicited (to accept the Torah.) So as not to give them a pretext vis-à-vis the Shechinah — to say: Had we been solicited, we would have accepted it. They were solicited and did not accept it! As it is written (Devarim 33:2) "And he said: L–rd came from Sinai, etc."
It Was for This Reason That the Nations of the World
Mekhilta Tractate Bachodesh 5:7