Take heed to yourselves, that your heart be not deceived,.... By observing the influence of the heavens upon the fruitfulness of the earth, and so be drawn to the worship of the host of them, the sun, moon, and stars; or by the examples of nations round about them; and by the plausible arguments they may make use of, taken from the traditions of ancestors, from antiquity, and the consent of nations, and the great numbers of worshippers, and the like: and ye turn aside; from the true God, and the worship of him; or from the law, as Jarchi, which directs to the worship of one God, and forbids idolatry, or the worshipping of images: and serve other gods, and worship them; other gods than the one only living and true God; gods that made not the heavens and the earth, and which cannot give rain, nor any blessing and mercy of life, nor help and deliver their worshippers when in distress.