NET

15 Yet my people have forgotten me and offered sacrifices to worthless idols. This makes them stumble along in the way they live and leave the old reliable path of their fathers. They have left them to walk in bypaths, in roads that are not smooth and level.

Darby

15 For my people hath forgotten me: they burn incense to vanity; and they have caused them to stumble in their ways, the ancient paths, to walk in by-paths of a way not cast up;

KJV

15 Because my people hath forgotten me, they have burned incense to vanity, and they have caused them to stumble in their ways [from] the ancient paths, to walk in paths, [in] a way not cast up;