STRONGS G4645:
													
												
									    		σκληρύνω (cf. 
Winer's Grammar, 92 (88)); 1 aorist subjunctive 2 person plural 
σκληρύνητε; passive, imperfect 
ἐσκληρυνομην; 1 aorist 
ἐσκληρυνθην; (
σκληρός, which see); the 
Sept. for 
הִקְשָׁה and 
הִזֵּק, 
to make hard, to harden; properly, in 
Hippocrates and 
Galen; metaphorically, 
to render obstinate, stubborn (
A. V. to harden): 
τινα, 
Romans 9:18 (in opposed to those who interpret it 
to treat harshly, cf. Fritzsche, vol. ii., p. 323f; (cf., too, Meyer at the passage)); 
τήν καρδίαν τίνος, 
Hebrews 3:8, 
15 and 
Hebrews 4:7 (from 
Psalm 94:8 (
Ps. 95:8); cf. 
Exodus 7:3, 
22; 
Exodus 8:19; 
Exodus 9:12); passive (the 
Sept. for 
קָשָׁה and 
חָזַק) 
to be hardened, i. e. become obstinate or stubborn: 
Acts 19:9; 
Hebrews 3:13. 
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