Jeremiah
Jeremiah 5:2ESV·traditional attribution

Though they say, “As the LORD lives,” yet they swear falsely.

John Calvin Reformed @genevareformer

This is added by way of anticipation; for the Jews, as it is well known, thought that they had a cover for all their vices, inasmuch as they had God’s name continually in their mouths. Since then they professed to worship the God of Abraham, they thought that this pretext was sufficient to cover all their wickedness.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. A challenge to produce any one right honest man, or at least any considerable number of such, in Jerusalem, Jer 5:1. Jerusalem had become like the old world, in which all flesh had corrupted their way. There were some perhaps who flattered themselves with hopes that there were yet many good men in Jerusalem, who would stand in the gap to turn...

Commenting on Jeremiah 5:1-9

John Gill Reformed Baptist @doctorgill

And though they say, the Lord liveth,.... It might be said, that there were multitudes that made mention of the name of the Lord, that professed it, and swore by it; which sometimes is put for the worship and service of God, Deu 10:20 and therefore it could not be so difficult a matter to find a man of integrity and uprightness among them; this...