Parallelism: the poetic statement of an idea in two slightly varying forms.

Hosea 5:14 

For I will be like a lion to Ephraim,
  and like a young lion to the house of Judah.
I myself will tear and go away;
  I will carry off, and no one shall rescue, [says the Lord].

Hosea 6:4 

What shall I do with you, O Ephraim?
  What shall I do with you, O Judah?
Your love is like a morning cloud,
  like the dew that goes away early.