GOD'S WORD® Translation
They said to Jeremiah, "May the LORD be a true and faithful witness against us if we don't do exactly what the LORD your God tells us to do.

American Standard Version
Then they said to Jeremiah, Jehovah be a true and faithful witness amongst us, if we do not according to all the word wherewith Jehovah thy God shall send thee to us.

Berean Study Bible
Then they said to Jeremiah, “May the LORD be a true and faithful witness against us if we do not act upon every word that the LORD your God sends you to tell us.

Douay-Rheims Bible
And they said to Jeremias: The Lord be witness between us of truth and faithfulness, if we do not according to every thing for which the Lord thy God shall send thee to us.

English Revised Version
Then they said to Jeremiah, The LORD be a true and faithful witness amongst us, if we do not even according to all the word wherewith the LORD thy God shall send thee to us.

King James Bible
Then they said to Jeremiah, The LORD be a true and faithful witness between us, if we do not even according to all things for the which the LORD thy God shall send thee to us.

World English Bible
Then they said to Jeremiah, Yahweh be a true and faithful witness among us, if we don't do according to all the word with which Yahweh your God shall send you to us.

Young's Literal Translation
And they have said to Jeremiah, 'Jehovah is against us for a witness true and faithful, if -- according to all the word with which Jehovah thy God doth send thee unto us -- we do not so.

Jeremiah 42:5 Additional Translations ...