Cross reference
John 20:24
24 But Thomas, one of the twelve, called Didymus, wasn't with them when Jesus came.
John 11:16
16 Thomas therefore, who is called Didymus,{"Didymus" means "Twin"} said to his fellow disciples, "Let's go also, that we may die with him."
Matthew 10:3
3 Philip; Bartholomew; Thomas; Matthew the tax collector; James the son of Alphaeus; and Lebbaeus, whose surname was Thaddaeus;
Matthew 18:20
20 For where two or three are gathered together in my name, there I am in the midst of them."
John 6:66-67
66 At this, many of his disciples went back, and walked no more with him.
67 Jesus said therefore to the twelve, "You don't also want to go away, do you?"
John 14:5
5 Thomas says to him, "Lord, we don't know where you are going. How can we know the way?"
John 21:2
2 Simon Peter, Thomas called Didymus, Nathanael of Cana in Galilee, and the sons of Zebedee, and two others of his disciples were together.
Hebrews 10:25
25 not forsaking our own assembling together, as the custom of some is, but exhorting one another; and so much the more, as you see the Day approaching.