The Bible clearly states that the appearance of an angel scared the shepherds out of their wits! Here are different Bible translations of their reactions in Luke 2:9
They were afraid with a great fear, filled with great dread. They were terrified, sore afraid, terribly frightened, feared a great fear, or were terror-stricken.
No matter how you look at it, those shepherds were terrified!
Terror is feeling of great fear, especially at the thought of experiencing or encountering something unpleasant.
Fear is a concern about something that threatens to bring bad news or results. It is an unpleasant feeling of anxiety or apprehension caused by the presence or anticipation of danger.
How afraid would you be if an angel appeared before you? But an angel sent from God would surely calm your fears, just like he did for the shepherds.
The angel reassured them. “Don’t be afraid!” he said. “I bring you good news that will bring great joy to all people. (Luke 2:10, NLT)
And then our part is just to believe the angel, the angel who is a divine being, a messenger of God.
Prayer – Father, help us believe you, with or without an angel. Amen