Parallel
Jeremiah 17:9
Rahlfs Septuagint (1935) · 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?