John Gills Exposition of the Bible Commentary - Jeremiah 2:22
For though thou wash thee with nitre ,.... The word נתר , "nitre", is only used in this place and in Proverbs 25:20 and it is hard to say what it is. Kimchi and Ben Melech observe, that some say it is what is called "alum"; and others that it is a dust with which they wash the head, and cleanse everything; and so Jarchi says it is a kind of earth used in cleaning garments; and "nitre" is mentioned by the Misnic doctors F19 Misn. Sabbat, c. 9. sect. 5. & Nidda, c. 9. sect. 6.... read more
Matthew Henry's Complete Commentary - Jeremiah 2:20-28
In these verses the prophet goes on with his charge against this backsliding people. Observe here, I. The sin itself that he charges them with?idolatry, that great provocation which they were so notoriously guilty of. 1. They frequented the places of idol-worship (Jer. 2:20): ?Upon every high hill and under every green tree, in the high places and the groves, such as the heathen had a foolish fondness and veneration for, thou wanderest, first to one and then to another, like one unsettled, and... read more