John 20:24

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

John 11:16

Then Thomas, who is called The twin, said to the fellow disciples, Let us go also, that we may die with him.

Matthew 10:3

Philip and Bartholomew; Thomas, and Matthew the publican; James, the son of Alpheus, and Lebbeus, called Thaddeus;

Matthew 18:20

for where two or three are assembled together in my name, there am I in the midst of them.

John 6:66-67

From this time many of his disciples went away from following him, and walked no more with him.

John 14:5

Thomas said to him, Lord, we know not where you go, and how do we know the way?

John 21:2

Simon Peter, and Thomas called the Twin, and Nathaniel who was from Cana in Galilee, and the sons of Zebedee, and two others of his disciples were together.

Hebrews 10:25

not forsaking our own congregation as some are in the habit of [doing], but exhorting [others], and so much the more as you see the day approaching.

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
From this time many of his disciples went away from following him, and walked no more with him.
Matthew 18:20
for where two or three are assembled together in my name, there am I in the midst of them.
Hebrews 10:25
not forsaking our own congregation as some are in the habit of [doing], but exhorting [others], and so much the more as you see the day approaching.