Matthew 10:32

Whoever confesses Me before men, him I will also confess before My Father who is in heaven. 

We, as Christians, should not be ashamed to confess Jesus before men. The reason being that when we share our faith with someone who doesn’t believe we open the door for that person to be saved. The devil wants to stop the spreading of the gospel aided by our confessing our faith to others. We are the best witnesses to the power of God. When we confess the name of Jesus, He will confess our name to the Father in heaven.