The God of the New Testament is not a vengeful God.
"Fear" in the New Testament = "Worship" and "Revere"
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https://www.merriam-webster.com/dictionary/fear
fear
1 of 2
noun
ˈfir
1
a: an unpleasant often strong emotion caused by anticipation or awareness of danger
b
(1): an instance of this emotion
(2): a state marked by this emotion
2: anxious concern : SOLICITUDE
3: profound reverence and awe especially toward God]
4: reason for alarm : DANGER