Paul told Timothy, a young disciple of Christ, to not get timid as he grew in godliness.
2 Timothy 1:
5 I remember your genuine faith, for you share the faith that first filled your grandmother Lois and your mother, Eunice. And I know that same faith continues strong in you. 6 This is why I remind you to fan into flames the spiritual gift God gave you when I laid my hands on you. 7 For God has not given us a spirit of fear and timidity, but of power, love, and self-discipline.