Ask them why not ONE scripture states that Christians were instructed to be "witnesses of Jehovah".
When they get flustered and tongue-tied because they cannot cite a SINGLE verse from Matthew to Revelation to back up their scripturally false "designer label", inform them that there are at least 30 Scriptures which clearly show show that Christians are to be witnesses for Christ, not God!
(Isaiah 62:2) And you will be called by a new name, Which Jehovah’s own mouth will designate.
(Acts 11:26) ..........in Antioch that the disciples were by divine providence called Christians.
(Matthew 10:18) ....before governors and kings for my sake, for a witness to them and the nations.
(Mark 13:9) .......be put on the stand before governors and kings for my sake, for a witness to them.
(Acts 1:8) ...........you will be witnesses of me in Jerusalem, in all Ju·de′a and Sa·mar′i·a.....
(John 1:15) John bore witness about him,. . .
(John 5:37) And the Father who sent me has himself borne witness about me.. . .
(John 8:18) .........and the Father who sent me bears witness about me."
(John 15:26, 27) ....the spirit of the truth, which comes from the Father, that one will bear witness about me; and you, in turn, are to bear witness...
(Acts 4:17, 18) So that this does not spread any further among the people, let us threaten them and tell them not to speak to anyone anymore on the basis of this name." With that they called them and ordered them not to say anything at all or to teach on the basis of the name of Jesus.
(Acts 10:39) And we are witnesses of all the things he did both in the country of the Jews and in Jerusalem;
(Acts 10:43) To him all the prophets bear witness......
(Acts 13:31) These are now his witnesses to the people.
(Acts 22:15) ....you are to be a witness for him to all men of the things you have seen and heard.
(Acts 22:20) .....and when the blood of Stephen your witness was being spilled....
(Acts 23:11) For just as you have been giving a thorough witness about me in Jerusalem, so you must also bear witness in Rome.. . .
(Acts 26:16) ...a witness both of things you have seen and things I will make you see respecting me.
(1 Corinthians 1:6) .....just as the witness about the Christ has been made firm among you,
(1 Timothy 2:6) ......who gave himself a corresponding ransom for all—this is what is to be witnessed to in its own due time.
(2 Timothy 1:8) So do not become ashamed either of the witness about our Lord or of me....
(1 John 5:9,10) Because this is the witness God gives, the witness that he has given about his Son... .......has not put his faith in the witness given by God concerning his Son.
(Revelation 1:9) ...for speaking about God and bearing witness concerning Jesus.
(Revelation 3:8) ....you kept my word and did not prove false to my name.
(Revelation 12:17) ...........and have the work of bearing witness concerning Jesus.
(Revelation 17:6) .............and with the blood of the witnesses of Jesus.. . .
(Revelation 19:10) ...........who have the work of witnessing concerning Jesus....
(Revelation 20:4) Yes, I saw the souls of those executed for the witness they gave about Jesus....
Also -
(1 Corinthians 1:2) ....all those everywhere who are calling on the name of our Lord Jesus Christ
(James 2:7) Do they not blaspheme the fine name by which you were called? (Acts 11:26)
(1 Peter 4:14,16) If you are being reproached for the name of Christ, you are happy, because the spirit of glory, yes, the spirit of God, is resting upon you. But if anyone suffers as a Christian, let him not feel ashamed, but let him keep on glorifying God while bearing this name.
For all recent members who have/want to found TTATT.