Jesus makes you brave and gives you courage in spiritual battles.

“Be of good courage, and let us be strong for our people and for the cities of our God. And may the LORD do what is good in His sight.” (1Chr 19:13)
“Finally, my brethren, be strong [endunamoo] in the Lord and in the power [kratos] of His might [ischus].” (Eph 6:10)
“I have written to you, young men, because you are strong [ischuros], and the word of God abides in you, and you have overcome [nikao] the wicked one.” (1Jn 2:14)
“Watch, stand fast in the faith, be brave, be strong [krataioo].” (1Cor 16:13)
“Yet in all these things we are more than conquerors [hupernikao] through Him who loved us.” (Rom 8:37)
“No weapon formed against you shall prosper” (Isa 54:17)
“For the weapons of our warfare [strateia] are not carnal but mighty [dunatos] in God for pulling down strongholds” (2Cor 10:4)
“Now a certain Jew named Apollos, born at Alexandria, an eloquent man and mighty [dunatos] in the Scriptures, came to Ephesus.” (Acts 18:24)
“Therefore I take pleasure in infirmities, in reproaches, in needs, in persecutions, in distresses, for Christ’s sake. For when I am weak, then I am strong [dunatos].” (2Cor 12:10)
“For we are glad when we are weak and you are strong [dunatos]. And this also we pray, that you may be made complete.” (2Cor 13:9)
“that He would grant you, according to the riches of His glory, to be strengthened [krataioo] with might through His Spirit in the inner man” (Eph 3:16)
“strengthened [dunamoo] with all might [dunamis], according to His glorious power [kratos], for all patience and longsuffering with joy” (Col 1:11)
“If anyone ministers, let him do it as with the ability [ischus] which God supplies, that in all things God may be glorified through Jesus Christ” (1Pet 4:11)
“and what is the exceeding greatness of His power [dunamis] toward us who believe, according to the working [energeia] of His mighty power [ischus kratos] which He worked [energeo] in Christ when He raised Him from the dead” (Eph 1:19,20)
“And there are diversities of activities, but it is the same God who works [energeo] all in all.” (1Cor 12:6)
“But one and the same Spirit works [energeo] all these things, distributing to each one individually as He wills.” (1Cor 12:11)
“Now to Him who is able [dunamai] to do exceedingly abundantly above all that we ask or think, according to the power [energeo] that works in us” (Eph 3:20)
“for it is God who works [energeo] in you both to will and to do for His good pleasure.” (Phil 2:13)
“when you received the word of God which you heard from us, you welcomed it not as the word of men, but as it is in truth, the word of God, which also effectively works [energeo] in you who believe.” (1Thes 2:13)
Reading: 1Chr 19-21; Jn 13