What does the Bible say about confidence in Christ?

The Bible speaks profoundly about our confidence in Christ, particularly in Philippians 1:6, where Paul expresses confidence that God, who began a good work in the believers, will carry it on to completion until the day of Christ Jesus. This highlights the assurance we have that our salvation and sanctification are not contingent upon our efforts but on God's sovereign work in our lives. The scripture teaches that true confidence comes from recognizing Christ as our mediator, who has fulfilled every requirement of the law on our behalf. As believers, we rest in Christ's completed work, knowing that we are secure in His grace and love.