In order to understand how to wait upon the Lord accurately, first we must see what’s the purpose of using an Eagle to explain the act of waiting upon the Lord?
Legend says that an Eagle at the age of 30-50, flies to a high place and there it endures a harsh trial of endurance and change. It can’t fly because its feathers are overgrown. Therefore it plucks all the feathers from its body. It plucks its talons from its feet because the talons have grown curled and useless. Its beak has grown too long and curled. It breaks its beak against a rock. Defenseless, it cries out and waits for the time of renewal.