Hebrews 10:4

10:4 For the blood of bulls and goats cannot take away sins. ¹ 

Hebrews 6:4

6:4 For it is impossible in the case of those who have once been enlightened, tasted the heavenly gift, become partakers of the Holy Spirit,

Hebrews 6:18

6:18 so that we who have found refuge in him ²  may find strong encouragement to hold fast to the hope set before us through two unchangeable things, since it is impossible for God to lie.

Hebrews 11:6

11:6 Now without faith it is impossible to please him, for the one who approaches God must believe that he exists and that he rewards those who seek him.

[10:4]  ¹ tn Grk “for it is impossible for the blood of bulls and goats to take away sins.”

[6:18]  ² tn Grk “have taken refuge”; the basis of that refuge is implied in the preceding verse.