5This is the message we have heard from him and proclaim to you, that God is light and in him there is no darkness at all. 6If we say that we have fellowship with him while we are walking in darkness, we lie and do not do what is true; 7but if we walk in the light as he himself is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin. 8If we say that we have no sin, we deceive ourselves, and the truth is not in us. 9If we confess our sins, he who is faithful and just will forgive us our sins and cleanse us from all unrighteousness. 10If we say that we have not sinned, we make him a liar, and his word is not in us.
2:1My little children, I am writing these things to you so that you may not sin. But if anyone does sin, we have an advocate with the Father, Jesus Christ the righteous; 2and he is the atoning sacrifice for our sins, and not for ours only but also for the sins of the whole world.
24But Thomas (who was called the Twin), one of the twelve, was not with them when Jesus came. 25So the other disciples told him, “We have seen the Lord.” But he said to them, “Unless I see the mark of the nails in his hands, and put my finger in the mark of the nails and my hand in his side, I will not believe.”
26A week later his disciples were again in the house, and Thomas was with them. Although the doors were shut, Jesus came and stood among them and said, “Peace be with you.” 27Then he said to Thomas, “Put your finger here and see my hands. Reach out your hand and put it in my side. Do not doubt but believe.” 28Thomas answered him, “My Lord and my God!” 29Jesus said to him, “Have you believed because you have seen me? Blessed are those who have not seen and yet have come to believe.”
30Now Jesus did many other signs in the presence of his disciples, which are not written in this book. 31But these are written so that you may come to believe that Jesus is the Messiah, the Son of God, and that through believing you may have life in his name.