Jamieson, Fausset and Brown on Hosea 12:10

10. by ... the prophets--literally, "upon," that is, My spirit resting on them. I deposited with them My instructions which ought to have brought you to the right way. An aggravation of your guilt, that it was not through ignorance you erred, but in defiance of God and His prophets [Calvin]. Ahijah the Shilonite, Shemaiah, Iddo, Azariah, Hanani, Jehu, Elijah, Elisha, Micaiah, Joel, and Amos were "the prophets" before Hosea.

visions ... similitudes--I adopted such modes of communication, adapted to man's capacities, as were calculated to arouse attention: I left no means untried to reform you. The first, second, and third chapters contain examples of "similitudes."