Visions 2 and 3 describe the removal of external hindrances, whereas visions 6 and 7 describe the removal of internal, spiritual hindrances. These are the corresponding b units. In Scripture horns symbolize kings or kingdoms in their exercise of royal might and authority. The horns of cattle, particularly of the wild ox, were used in the ancient world as symbols of invincible …
Baker Publishing Group, The Baker Illustrated Bible Commentary, by Gary M. Burge