R. Elazar b. R. Yossi Haglili said: It is written (Psalms 81:8) "In distress you called and I rescued you. I answered you from the recesses of thunder. I tested you at the waters of Merivah": At the (very) time that I answered and protected you and made the whole world thunder for you — at that very time it was revealed before Me what you were destined to do at the waters of Merivah!