# G4645 σκληρύνω

σκληρύνω (sklērýnō), Strong’s G4645: to indurate, i.e. (figuratively) render stubborn KJV: harden. Occurs 31 times.

Source: https://besorah.bible/word/G4645 — Besorah, the whole Bible in Hebrew, Greek and English. Texts and licences: https://besorah.bible/about/credits.html

*sklērýnō* — to indurate, i.e. (figuratively) render stubborn

KJV: harden

Derived from [σκληρός sklērós](https://besorah.bible/word/G4642) (dry, i.e. hard or tough)

Occurs 31 times.

## Where it occurs
- [Acts 19:9](https://besorah.bible/besorah/acts/19?v=9) — But when some were hardened and disobedient, speaking evil of the Way before the multitude, he departed from them and…
- [Romans 9:18](https://besorah.bible/besorah/romans/9?v=18) — So then, he has mercy on whom he desires, and he hardens whom he desires.
- [Hebrews 3:8](https://besorah.bible/besorah/hebrews/3?v=8) — don’t harden your hearts as in the rebellion, in the day of the trial in the wilderness,
- [Hebrews 3:13](https://besorah.bible/besorah/hebrews/3?v=13) — but exhort one another day by day, so long as it is called “today”, lest any one of you be hardened by the…
- [Hebrews 3:15](https://besorah.bible/besorah/hebrews/3?v=15) — while it is said, “Today if you will hear his voice, don’t harden your hearts, as in the rebellion.”
- [Hebrews 4:7](https://besorah.bible/besorah/hebrews/4?v=7) — he again defines a certain day, “today”, saying through David so long a time afterward (just as has been said), “Today…
- [Sirach 30:12](https://besorah.bible/tanakh-gr/sirach/30?v=12) —