Ibrani 2:3

2:3 how will we escape if we neglect such a great salvation? It was first communicated through the Lord and was confirmed to us by those who heard him,

Ibrani 10:26

10:26 For if we deliberately keep on sinning after receiving the knowledge of the truth, no further sacrifice for sins is left for us, ¹ 

Ibrani 10:31

10:31 It is a terrifying thing to fall into the hands of the living God.

[10:26]  ¹ tn Grk “is left,” with “for us” implied by the first half of the verse.