John 20:19-31

When therefore it was evening on that day, which was the first day of the week, and the doors shut where the disciples were, through fear of the Jews, Jesus came and stood in the midst, and says to them, Peace be to you. And having said this, he shewed to them his hands and his side. The disciples rejoiced therefore, having seen the Lord. Jesus said therefore again to them, Peace be to you: as the Father sent me forth, I also send you. And having said this, he breathed into them, and says to them, Receive the Holy Spirit: whose soever sins ye remit, they are remitted to them; whose soever sins ye retain, they are retained. But Thomas, one of the twelve, called Didymus, was not with them when Jesus came. The other disciples therefore said to him, We have seen the Lord. But he said to them, Unless I see in his hands the mark of the nails, and put my finger into the mark of the nails, and put my hand into his side, I will not believe. And eight days after, his disciples were again within, and Thomas with them. Jesus comes, the doors being shut, and stood in the midst and said, Peace be to you. Then he says to Thomas, Bring thy finger here and see my hands; and bring thy hand and put it into my side; and be not unbelieving, but believing. Thomas answered and said to him, My Lord and my God. Jesus says to him, Because thou hast seen me thou hast believed: blessed they who have not seen and have believed. Many other signs therefore also Jesus did before his disciples, which are not written in this book; but these are written that ye may believe that Jesus is the Christ, the Son of God, and that believing ye might have life in his name.