Hebrews 6:4 References

4 For in the case of those who have once been aenlightened and have tasted of bthe heavenly gift and have been made cpartakers of the Holy Spirit,

c Galatians 3:2, Hebrews 2:4

Galatians 3

2 This is the only thing I want to find out from you: did you receive the Spirit by the works of the Law, or by ahearing with faith?

Hebrews 2

4 God also testifying with them, both by asigns and wonders and by bvarious miracles and by cgifts of the Holy Spirit daccording to His own will.

Other references for Hebrews 6:4

a 2 Corinthians 4:4, 2 Corinthians 4:6, Hebrews 10:32
b John 4:10, Ephesians 2:8