Listen to what the book of the bible
HEBREWS 3 has to say about becoming harden to unbelief
12 See, brethren, lest there shall be in any of you an evil heart of unbelief in the falling away from the living God,
13 but exhort ye one another every day, while the To-day is called, that none of you may be hardened by the deceitfulness of the sin,
This is an encouragement to the readers of the Letter of Hebrews ~ Which is saying !
Hey be careful ~ Do not fall away from the living God ~ (Whom you have believed in and trusted ~> By going out and becoming hardened by the deceitfulness of sin (fleshly ways to say ->
"I NO LONGER BELIEVE IN GOD I NO LONGER BELIEVE OR TRUST IN THE LORD JESUS CHRIST"
"MY SIN IS THAT OF UNBELIEF AND NO LONGER TRUSTING GOD"
"MY HEART BECOMES HARDEN AND EVIL ~~~ "
Read, and understand, may God give the increase.
Do you believe? Are you saved to the kingdom of God and have the spirit indwelling in you?