Hebrews 6:4 For it is impossible for those who were once enlightened, and have tasted the heavenly gift, and have become partakers of the Holy Spirit [5] and have tasted the good word of God and the powers of the age to come, [6] if they fall away, to renew them again to repentance, since they crucify again for themselves the Son of God, and put Him to an open shame.
I have written rather extensively on this passage back in 2010, specifically Hebrews 6:4-8. If anyone wants to read the content, you can find it here. Nonetheless it is good to take in the whole counsel of God, so we’ll address this topic again.