Parallel
Jeremiah 17:9
Swete's Septuagint · Berean Standard Bible
βαθεῖα ἡ καρδία παρὰ πάντα, καὶ ἄνθρωπός ἐστιν καὶ τίς γνώσεται αὐτόν;
The heart is deceitful above all things and beyond cure. Who can understand it?