Cf. κράτος and ἰσχύς:
Proverbs 34(27):24: ὅτι οὐ τὸν αἰῶνα ἀνδρὶ κράτος καὶ ἰσχύς οὐδὲ παραδίδωσιν ἐκ γενεᾶς εἰς γενεάν [For a man’s power and strength do not last forever; neither can he transmit it from one generation to another (NETS).]
Job 12:16: παρ’ αὐτῷ κράτος καὶ ἰσχύς αὐτῷ ἐπιστήμη καὶ σύνεσις [With him are strength and power; knowledge and understanding are his (NETS).]
The κράτος of his ἰσχύς:
Ephesians 1:19: καὶ τί τὸ ὑπερβάλλον μέγεθος τῆς δυνάμεως αὐτοῦ εἰς ἡμᾶς τοὺς πιστεύοντας, κατὰ τὴν ἐνέργειαν τοῦ κράτους τῆς ἰσχύος αὐτοῦ
Ephesians 6:10: { Τὸ λοιπόν, ἀδελφοί μου ♦ Τοῦ λοιποῦ }, ἐνδυναμοῦσθε ἐν κυρίῳ, καὶ ἐν τῷ κράτει τῆς ἰσχύος αὐτοῦ.