Iḇ`rim (Hebrews) 2:1-3

Because of this we have to pay more attention to what we have heard, lest we drift away. For if the word spoken through messengers proved to be firm, and every transgression and disobedience received a right reward, how shall we escape if we neglect so great a deliverance, which first began to be spoken by the Master, and was confirmed to us by those that heard