Deuteronomy 18:19 And it shall come to pass, that whosoever will not hearken unto my words which he shall speak in my name, I will require it of him.

Hebrews 2:2 For if the word spoken by angels was stedfast, and every transgression and disobedience received a just recompence of reward;

Hebrews 2:3 How shall we escape, if we neglect so great salvation; which at the first began to be spoken by the Lord, and was confirmed unto us by them that heard him;

Hebrews 10:29 Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?

Hebrews 12:25 See that ye refuse not him that speaketh. For if they escaped not who refused him that spake on earth, much more shall not we escape, if we turn away from him that speaketh from heaven:

Exodus 23:21 Beware of him, and obey his voice, provoke him not; for he will not pardon your transgressions: for my name is in him.

1 Samuel 2:25 If one man sin against another, the judge shall judge him: but if a man sin against the LORD, who shall intreat for him? Notwithstanding they hearkened not unto the voice of their father, because the LORD would slay them.