Why is the concept of fear not important for Christians?

'Fear not' is a paramount message throughout Scripture, particularly in the context of the Gospel as presented in Luke 2:10, where the angel reassures the shepherds. This phrase indicates that those who understand their sinful state and the grace offered through Christ can find peace, for the fear that accompanies the knowledge of God's holiness is transformed into a joy rooted in His mercy. As believers, we are reminded that perfect love casts out fear (1 John 4:18) as we trust in Christ, who has borne our sin and shame. Thus, 'fear not' encapsulates the essence of the believer’s relationship with the sovereign God who has made provision for us through the Savior.