If these are the Seven Deadly Sins, Fear isn't one of them, unless you mean something else? I'd replace Fear with Pride, maybe, feeling important enough for Satan to take personal interest in assassinating you.
Fear isn't expressly a sin, but it's a sign of their will faltering. The Bible has plenty of passages on trying to cleanse yourself of it after the fact and in relation to defending against it (with armor and shields and stuff).
“Even though I walk through the valley of the shadow of death, I will fear no evil, for you are with me; your rod and your staff, they comfort me.” - Psalm 23:4
It's been the premise for Exorcism narratives, the idea that if you're succumbing to your fear that your connection with God is weakening, making you more susceptible. There's so much urgency to not be afraid, it must mean something.
Ę̵̚x̸͎̾i̴͚̽s̵̻͐t̷͐ͅe̷̯͠n̴̤̚t̵̻̅i̵͉̿a̴̮͊l̵͍̂ ̴̹̕D̵̤̀e̸͓͂t̵̢͂e̴͕̓c̸̗̄t̴̗̿ï̶̪v̷̲̍é̵͔