'Confidence' in the Bible

It is right for me to feel this way about you, because [you have me in your heart as] I have you in my heart, since both in my imprisonment and in the defense and confirmation of the good news [regarding salvation], all of you share in [His matchless] grace with me.

Because of my chains [seeing that I am doing well and that God is accomplishing great things], most of the brothers have renewed confidence in the Lord, and have far more courage to speak the word of God [concerning salvation] without fear [of the consequences, seeing that God can work His good in all circumstances].

for we [who are born-again have been reborn from above—spiritually transformed, renewed, set apart for His purpose and] are the true circumcision, who worship in the Spirit of God and glory and take pride and exult in Christ Jesus and place no confidence [in what we have or who we are] in the flesh—