Israel’s (actually Judah’s — Jer. 7:21; 9:26) hypocritical worship of Jehovah their God was a false worship and was a worship of superstition. In their superstitious worship, even the temple had become an idol and something of superstition. Thus, Jeremiah told them not to say these words regarding the temple of Jehovah. Cf. note 1 Sam. 4:31a.