Eight is a number that represents new Beginning, a new Order a new covenant, represents the outpouring of The Holy Ghost in The word of God.
Eagles have strong vision and so are able to identify its prey and focusses on it until it gets the prey and at the same time it is able to see from afar its enemy
Give, and it will be given to you. Good measure, pressed down, shaken together, running over, will be put into your lap. For with the measure you use it will be measured back to you"