Thus saith the LORD, Learn not the way of the heathen, and be not dismayed at the signs of heaven; for the heathen are dismayed at them.
Learn not the way of the heathen, and be not dismayed at the signs of heaven. Eichorn thinks the reference here to be to some celestial portent which had appeared at that time, causing the Jews dismay. Probably the reference is general, namely, to the Chaldees, famed as astrologers, through contact with whom the Jews were likely to fall into the same superstition.
Way - the precepts or ordinances (Acts 9:2, "If he found any of this way," i:e., religion).
Signs of heaven. The Gentiles did not acknowledge a Great First Cause: many thought events depended on the power of the stars, which some, as Plato, thought to be endued with spirit and reason. All heavenly phenomena are included, eclipses, comets, etc.