'Hearts' in the Bible

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

in its being said, 'To-day, if His voice ye may hear, ye may not harden your hearts, as in the provocation,'

again He doth limit a certain day, 'To-day,' (in David saying, after so long a time,) as it hath been said, 'To-day, if His voice ye may hear, ye may not harden your hearts,'

because this is the covenant that I will make with the house of Israel, after those days, saith the Lord, giving My laws into their mind, and upon their hearts I will write them, and I will be to them for a God, and they shall be to Me for a people;

This is the covenant that I will make with them after those days, saith the Lord, giving My laws on their hearts, and upon their minds I will write them,'

may we draw near with a true heart, in full assurance of faith, having the hearts sprinkled from an evil conscience, and having the body bathed with pure water;