Your boldness in the faith comes from the authority you have in Christ.

“Then David said to Saul, Let no man’s heart fail because of him; your servant will go and fight with this Philistine.” (1Sam 17:32)
“Watch, stand fast in the faith, be brave, be strong.” (2Cor 16:13)
“Behold, I give you the authority to trample on serpents and scorpions, and over all the power of the enemy” (Lk 10:19)
“Finally, my brethren, be strong in the Lord and in the power of His might.” (Eph 6:10)
“You therefore, my son, be strong in the grace that is in Christ Jesus.” (2Tim 2:1)
“Stand fast therefore in the liberty by which Christ has made us free, and do not be entangled again with a yoke of bondage.” (Gal 5:1)
“Therefore, my beloved and longed-for brethren, my joy and crown, so stand fast in the Lord, beloved.” (Phil 4:1)
“For now we live, if you stand fast in the Lord.” (1Thes 3:8)
“Therefore, brethren, stand fast and hold the traditions which you were taught, whether by word or our epistle.” (2Thes 2:15)
Reading: 1Sam 16-18; Lk 2