LXX Deut 4:6

καὶ φυλάξεσθε καὶ ποιήσετε, ὅτι αὕτη ἡ σοφία ὑμῶν καὶ ἡ σύνεσις ἐναντίον πάντων ἐθνῶν, ὅσοι ἐὰν ἀκούσωσιν πάντα τὰ δικαιώματα ταῦτα καὶ ἐροῦσιν Ἴδου λαὼ σοφὸς καὶ ἐπιστήμων τὸ ἔθνος τὸ μέγα τοῦτο.

Observe them carefully, for this will show your wisdom and understanding in the sight of the peoples, who will hear of all these statutes and say, “Surely this great nation is a wise and understanding people.”