The person that does the will of his Father in Heaven, is called Jesus' brother; as he answered those that told him that his mother and brothers were wanting to speak with him:
"But he answered and said unto him that told him, Who is my mother? and who are my brethren?
And he stretched forth his hand toward his disciples, and said, Behold my mother and my brethren!
For whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother." (Math.12.48-50)
The first apostles called by Jesus to follow him were Simon Peter and his brother Andrew, James and his brother John.
In Matthew 12:49,50 Jesus says anyone who does the will of God is my brother, sister and mother
Jesus had two disciples called Judas. One was Judas Iscariot, the other was just called Judas. Judas Iscariot is not known as Jesus brother, actually, he was the follower of Jesus that betrayed him to the Pharisees.
That James was not his brother.
They were half brothers James and Jude.
Yes. We are told that John the disciple (not John the baptist!) had a brother called James, who were both sons of a fisherman called Zebedee. Both John and James were disciples of Jesus, and were typical beligerent teenage boys - they were called, in fact, the 'Sons of Thunder'.
Peter and Andrew
Simon Peter, called at the same time was his brother Andrew.
Lazarus had a sister called Mary. That Mary was not the mother of Jesus.
No, the disciple John was not Jesus' biological brother.
No, there is no historical or biblical evidence to suggest that Jesus had a twin brother. The concept of Jesus having a twin brother is not supported by mainstream Christian beliefs.
No, John the Baptist was not Jesus' brother. John the Baptist was a cousin of Jesus, as his mother Elizabeth was a relative of Mary, the mother of Jesus.