Parallel
Romans 11:34
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Τίς γὰρ ἔγνω νοῦν κυρίου; Ἢ τίς σύμβουλος αὐτοῦ ἐγένετο;
“Who has known the mind of the Lord? Or who has been His counselor (note: Isaiah 40:13 (see also LXX))?”