The secret of the Lord is with those who fear Him. Initially, He reveals it to those who fear Him, and afterwards, to the righteous. As it is said, "The secret of the Lord is with the upright." Rabbi Simon said, "There are no secrets for the upper ones, but there are secrets for the lower ones."
It once happened that Rabbi Yosi ben Durmaskis went to greet Rabbi Eliezer in Lod and asked him, "What new thing was taught in the study hall today?" Rabbi Eliezer replied, "They counted and concluded that Ammon and Moab tithe the tithe of the poor in the Sabbatical year." Rabbi Yosi said to him, "Your hands are extended, and your eyes are open." Rabbi Eliezer also extended his hands and received his eyesight.
Then Rabbi Eliezer wept and said, "The secret of the Lord is with those who fear Him. Go out and tell them not to be confident in their counting, for this is the tradition I received from Rabbi Yochanan ben Zakkai, who heard it from his teacher, and his teacher heard it from Moses at Sinai: Ammon and Moab tithe the tithe of the poor in the Sabbatical year." When Rabbi Yosi's vision was restored, he returned to the people and related the tradition to them.