So He has mercy on any man that He chooses to, and He hardens any man that He chooses to harden.

Remember me to Herodion, my fellow-countryman. Remember me to the Christian members of Narcissus' family.

You must not harden your hearts as they did in provoking me, as on the day in the desert they tested me,

and yet the warning continues to be spoken: "If you but hear His voice, you must not harden your hearts as they did in provoking me."

He again fixes a definite day, saying long afterward through David, as has been quoted: "If you but hear His voice, you must not harden your hearts."