If so then why did he say my lord and my God referring to Jesus? Or was not part of the church?
New World Bible
26 Well, eight days later his disciples were again indoors, and Thomas with them. Jesus came, although the doors were locked, and he stood in their midst and said: “May YOU have peace.” 27 Next he said to Thomas: “Put your finger here, and see my hands, and take your hand and stick it into my side, and stop being unbelieving but become believing.” 28 In answer Thomas said to him: “My Lord and my God!” 29 Jesus said to him: “Because you have seen me have you believed? Happy are those who do not see and yet believe.”
New World Bible
26 Well, eight days later his disciples were again indoors, and Thomas with them. Jesus came, although the doors were locked, and he stood in their midst and said: “May YOU have peace.” 27 Next he said to Thomas: “Put your finger here, and see my hands, and take your hand and stick it into my side, and stop being unbelieving but become believing.” 28 In answer Thomas said to him: “My Lord and my God!” 29 Jesus said to him: “Because you have seen me have you believed? Happy are those who do not see and yet believe.”