KJV(i)2 For if the word spoken by angels was stedfast, and every transgression and disobedience received a just recompence of reward;

MSTC(i)2 For if the word which was spoken by angels was steadfast -- so that every transgression and disobedience received a just recompense to reward -

ISV(i)2 because if the message spoken by angels was reliable, and every violation and act of disobedience received its just punishment,

My thoughts.
We are not held to the words of angels for the are both good and bad angels but, we are held by the Word.