Jeremiah 18:15

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. ¹  They have left them to walk in bypaths, in roads that are not smooth and level. ² 

Isa 3:12; Isa 9:16; Isa 41:29; Isa 57:14; Isa 65:7; Jer 2:13,19,32; Jer 3:21; Jer 6:16; Jer 10:15; Jer 13:25; Jer 16:19; Jer 17:13; Jer 19:5; Jer 44:15-19,25; Ho 2:13; Ho 11:2; Mal 2:8; Mt 15:6; Ro 14:21

¹ sn Heb “the ancient path.” This has already been referred to in Jer 6:16. There is another “old way” but it is the path trod by the wicked (cf. Job 22:15).

² sn Heb “ways that are not built up.” This refers to the built-up highways. See Isa 40:4 for the figure. The terms “way,” “by-paths,” “roads” are, of course, being used here in the sense of moral behavior or action.