Charles Ellicott Commentary Deuteronomy 9:19

"For I was afraid of the anger and hot displeasure, wherewith Jehovah was wroth against you to destroy you. But Jehovah hearkened unto me that time also." — Deuteronomy 9:19 (ASV)

For I was afraid. —In Hebrews 12:21, the words I exceedingly fear are (in the Greek) identical with these.