5 Bible Verses about Avoiding Obstinacy

harden not your hearts, as in the provocation, in the day of temptation in the wilderness,

In that it is said, This day if you hear his voice, harden not your hearts, as in the provocation:

again he appoints a certain day, saying in David, as has previously been said, This day, after so long a time; If you may hear his voice this day, harden not your hearts.

but exhort one another each day, while it is called to-day; in order that no one of you may be hardened with the deceitfulness of sin:

For it behooves the bishop to be blameless, as the steward of God; not audacious, not irascible, not given to wine, not a controvertist, not fond of filthy lucre;