Hosea 10:4

They have spoken words, empty, vain statements, swearing falsely in making a covenant; for they were not fair and honest in their treaties with other nations, keeping them only as long as they hoped to have some benefit or advantage from them; thus judgment, what they wanted to consider right and good, springeth up as hemlock, a poisonous plant, in the furrows of the field. Cf Amos 6:12. Since they themselves were not clear on what was right, their hazy notions reacted in a most unfavorable manner on themselves, like a poisonous weed overgrowing a field.