How is our heart hardened?
• Unbelief
• Deceitfulness of sin
• Willful disobedience (rebellion)
Prov. 28:13 He that covereth his sins shall not prosper: but whoso confesseth and forsaketh them shall have mercy.
Prov. 28:14 Happy is the man that feareth alway: but he that hardeneth his heart shall fall into mischief.