When you look at those around you in your Bible study group or Sunday school class, what type of people do you see? Do you see everyone as "saints" or as "sinners" or as "saints who sometimes sin" or as something else? How often have you said to your class (or heard it said), "We're all sinners" compared to saying or hearing "We're all saints"? How did the writers in the New Testament look upon the Christians in the churches they wrote?
Consider Hebrews 3:1 -- "Therefore, holy brothers and sisters, who share in the heavenly calling, fix your thoughts on Jesus, whom we acknowledge as our apostle and high priest." Do you see others in your class and yourself as "holy partners in a heavenly calling"?
I am not saying that true Christians never sin, because we are still tempted and still sin sometimes. We certainly sinned before we placed our faith in Jesus Christ as Lord and Savior.
You might ask or discuss with your class some of these questions and maybe look for other examples in the New Testament of what names or "labels" Christians could call "or put on" one another.. What difference would it make if we saw ourselves and other followers of Jesus Christ as the Apostle Paul saw them: " To the church of God that is in Corinth, to those who are sanctified in Christ Jesus, called to be saints, together with all those who in every place call on the name of our Lord Jesus Christ, both their Lord and ours" (1 Corinthians 1:2)? The church in Corinth was certainly imperfect and needed Paul's correction, but he certainly gave the believers there something for which they could aspire when he addressed them.
May God bless your Bible study and teaching this Sunday!
For the Love of God's Word,