The disappearance of the clouds of glory inspired Israel with terror, for now they were unaided against the attacks of enemies, whereas none had been able to enter into the camp of Israel while the clouds covered them. This fear was not, indeed, ungrounded, for hardly did Amalek learn that Aaron was dead and that the clouds of glory had vanished, when he at once set about harassing Israel. [646] Amalek acted in accordance with the counsel his grandsire Esau had given him, for his words to his grandson had been: "In spite of all my pains, I did not succeed in killing Jacob, therefore be thou mindful of avenging me upon his descendants." "But how, alas!" said Amalek, "Shall I be able to compete with Israel?" Esau made answer: "Look well, and as soon as thou seest Israel stumble, leap upon them." Amalek looked upon this legacy as the guiding star of his actions. When Israel trespassed, saying with little faith, "Is the Lord among us, or not?" Amalek instantly appeared. Hardly had Israel been tempted by its spies wickedly to exclaim, "Let us make a captain, and let us return into Egypt," when Amalek was upon the scene to battle with Israel. In later times also Amalek followed this policy, and when Nebuchadnezzar moved to Jerusalem in order to destroy it, Amalek took up his position one mile away from the holy city, saying: "If Israel should conquer, I should declare that I had come to assist them, but should Nebuchadnezzar be victorious, then shall I cut off the flight of the fleeing Israelites." His hopes were realized, for Nebuchadnezzar was victorious, and standing at the crossway, he cut down the fleeing Israelites, and added insult to injury by hurling invectives against God and the people, and ridiculing them.