Hebrews 6:4-6 NRS

4 For it is impossible to restore again to repentance those who have once been enlightened, and have tasted the heavenly gift, and have shared in the Holy Spirit,
5 and have tasted the goodness of the word of God and the powers of the age to come,
6 and then have fallen away, since on their own they are crucifying again the Son of God and are holding him up to contempt.