Doubt is a part of faith but many evangelical denominations do not want to admit this. Yes, Jesus says blessed are those who do not see and yet believe, but how does he treat Thomas's doubt? He simply asks him to put his hand in the wounds. There is no shaming, no asking if he remembered the prophecies, only love.
When someone comes to be doubting their faith, or even doubting God I assure them that God can handle it.
I find it interested that the Psalm and the Acts passage are about unity. How does this connect to Doubting Thomas? The disciples were gathered together when Jesus first appeared and Thomas was absent. We have never heard where he was. Was he hiding or did he have a legitimate excuse like a stomach virus? We will never know. Did his doubt bring more unity or less or did it affect it at all?
'We proclaim to you what we have seen and heard, so that you also may have fellowship with us.' Thomas can say this now, but what about those of us who have not seen and heard and still doubt? Can we proclaim? Isn't that what the essence of faith is? This song expresses Doubting Thomas better than I ever could: Doubting Thomas Nickle Creek Live/