Jeremiah 17:13

They that depart from me. — The rapid change of person from second to first and first to third is eminently Hebrew.

Written in the earth. — In implied contrast with the name graven on the rock for ever (Job 19:24) are those written on the dust or sand. The Eastern habit of writing on the ground (of which John 8:6 supplies one memorable instance, and which was the common practice in Jewish schools) gave a vividness to the similitude which we have almost lost. For “the fountain of living waters,” compare Note on Jeremiah 2:13.