John 20:24

Now Thomas, one of the twelve, who was called 'the Twin,' was not with them when Jesus came;

John 11:16

Whereupon Thomas (called 'the Twin') said to his fellow-disciples, "Let us go too, let us die along with him!"

Matthew 10:3

Philip and Bartholomew, Thomas and Matthew the taxgatherer, James the son of Alphaeus and Lebbaeus whose surname is Thaddaeus,

Matthew 18:20

For where two or three have gathered in my name, I am there among them."

John 6:66-67

After that, many of his disciples drew back and would not associate with him any longer.

John 14:5

"Lord," said Thomas, "we do not know where you are going, and how are we to know the way?"

John 21:2

Simon Peter, Thomas (who was called 'the Twin'), Nathanael from Cana in Galilee, the two sons of Zebedaeus, and two other disciples of his, were all together.

Treasury of Scripture Knowledge

Summary

But Thomas, one of the twelve, called Didymus, was not with them when Jesus came.

Bible References

Was

John 6:66
After that, many of his disciples drew back and would not associate with him any longer.
Matthew 18:20
For where two or three have gathered in my name, I am there among them."