John 11:14–16 King James Version
14 Then said Jesus unto them plainly, Lazarus is dead. 15 And I am glad for your sakes that I was not there, to the intent ye may believe; nevertheless let us go unto him. 16 Then said Thomas, which is called Didymus, unto his fellowdisciples, Let us also go, that we may die with him.
John 14:5–8 King James Version
5 Thomas saith unto him, Lord, we know not whither thou goest; and how can we know the way? 6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me. 7 If ye had known me, ye should have known my Father also: and from henceforth ye know him, and have seen him. 8 Philip saith unto him, Lord, shew us the Father, and it sufficeth us.
John 20:24–29 King James Version
24 But Thomas, one of the twelve, called Didymus, was not with them when Jesus came. 25 The other disciples therefore said unto him, We have seen the Lord. But he said unto them, Except I shall see in his hands the print of the nails, and put my finger into the print of the nails, and thrust my hand into his side, I will not believe. 26 And after eight days again his disciples were within, and Thomas with them: then came Jesus, the doors being shut, and stood in the midst, and said, Peace be unto you. 27 Then saith he to Thomas, reach hither thy finger, and behold my hands; and reach hither thy hand, and thrust it into my side: and be not faithless, but believing. 28 And Thomas answered and said unto him, My Lord and my God. 29 Jesus saith unto him, Thomas, because thou hast seen me, thou hast believed: blessed are they that have not seen, and yet have believed.
John 21:1–2 King James Version
1 After these things Jesus shewed himself again to the disciples at the sea of Tiberias; and on this wise shewed he himself. 2 There were together Simon Peter, and Thomas called Didymus, and Nathanael of Cana in Galilee, and the sons of Zebedee, and two other of his disciples.