In this passage, we can see that the shepherds became fearful of God’s wrath when they saw who God is, but yet the message of the gospel means that they and likewise, we do not need to fear his wrath.

Luke 2:9-11 English Standard Version (ESV)
9 And an angel of the Lord appeared to them, and the glory of the Lord shone around them, and they were filled with great fear. 10 And the angel said to them, “Fear not, for behold, I bring you good news of great joy that will be for all the people. 11 For unto you is born this day in the city of David a Savior, who is Christ the Lord.