Mark 3 – Skeptic's Annotated Bible answered

1 And he entered again into the synagogue; and there was a man there which had a withered hand.

2 And they watched him, whether he would heal him on the sabbath day; that they might accuse him.

3 And he saith unto the man which had the withered hand, Stand forth.

4 And he saith unto them, Is it lawful to do good on the sabbath days, or to do evil? to save life, or to kill? But they held their peace.

5 And when he had looked round about on them with anger, being grieved for the hardness of their hearts, he saith unto the man, Stretch forth thine hand. And he stretched it out: and his hand was restored whole as the other.

BOM: 1 Nephi 2:18, 7:8, 15:4

6 And the Pharisees went forth, and straightway took counsel with the Herodians against him, how they might destroy him.

7 But Jesus withdrew himself with his disciples to the sea: and a great multitude from Galilee followed him, and from Judaea,

8 And from Jerusalem, and from Idumaea, and from beyond Jordan; and they about Tyre and Sidon, a great multitude, when they had heard what great things he did, came unto him.

9 And he spake to his disciples, that a small ship should wait on him because of the multitude, lest they should throng him.

10 For he had healed many; insomuch that they pressed upon him for to touch him, as many as had plagues.

11 And unclean spirits, when they saw him, fell down before him, and cried, saying, Thou art the Son of God.

"Thou art the Son of God."
More "unclean spirits" confess that Jesus is "the son of God." 1 Jn.4:2 says that all such spirits are of God.
Are those who believe Jesus is the Christ of God?

1 John 4:2 says no such thing. See chapter 1:23.

12 And he straitly charged them that they should not make him known.

(3:11-12) Although the disciples weren't sure about Jesus even after his alleged resurrection, the "unclean spirits" knew that he was "the son of God." But Jesus told them not to tell anyone.

Would you want to be endorsed by the devil?

13 And he goeth up into a mountain, and calleth unto him whom he would: and they came unto him.

14 And he ordained twelve, that they should be with him, and that he might send them forth to preach,

15 And to have power to heal sicknesses, and to cast out devils:

Jesus gives his apostles the power to heal sickness and "cast out devils."

A clear text indicating that being sick and being possessed are different things. See Matthew 12:22.

16 And Simon he surnamed Peter;

17 And James the son of Zebedee, and John the brother of James; and he surnamed them Boanerges, which is, The sons of thunder:

18 And Andrew, and Philip, and Bartholomew, and Matthew, and Thomas, and James the son of Alphaeus, and Thaddaeus, and Simon the Canaanite,

Mark says that Thaddeus was one of the twelve apostles, but his name is not included in the lists given in Luke (6:14-16) or Acts (1:13), which list Judas the brother of James instead.
Who were the apostles?

The name Thaddaeus means the same as Judas. See Matthew 10:3.

19 And Judas Iscariot, which also betrayed him: and they went into an house.

20 And the multitude cometh together again, so that they could not so much as eat bread.

21 And when his friends heard of it, they went out to lay hold on him: for they said, He is beside himself.

"He is beside himself."
Jesus' friends think he is insane.

They did indeed.

22 And the scribes which came down from Jerusalem said, He hath Beelzebub, and by the prince of the devils casteth he out devils.

"He hath Beelzebub, and by the prince of the devils casteth he out devils."
The scribes think that Jesus casts out devils by the power of the prince of devils, Beelzebub.

Jesus addresses how absurd that allegation is in the next few verses.

23 And he called them unto him, and said unto them in parables, How can Satan cast out Satan?

24 And if a kingdom be divided against itself, that kingdom cannot stand.

25 And if a house be divided against itself, that house cannot stand.

26 And if Satan rise up against himself, and be divided, he cannot stand, but hath an end.

27 No man can enter into a strong man’s house, and spoil his goods, except he will first bind the strong man; and then he will spoil his house.

28 Verily I say unto you, All sins shall be forgiven unto the sons of men, and blasphemies wherewith soever they shall blaspheme:

29 But he that shall blaspheme against the Holy Ghost hath never forgiveness, but is in danger of eternal damnation:

"He that shall blaspheme against the Holy Ghost hath never forgiveness."
Jesus becomes angry at those who said that he had "an unclean spirit," so he announces the unforgivable sin: "blasphemy against the Holy Ghost."
Is there an unforgivable sin?

Where in this verse is any display of the emotion of anger?
And there is an unforgivable sin, see Matthew 12:31.

30 Because they said, He hath an unclean spirit.

31 There came then his brethren and his mother, and, standing without, sent unto him, calling him.

32 And the multitude sat about him, and they said unto him, Behold, thy mother and thy brethren without seek for thee.

33 And he answered them, saying, Who is my mother, or my brethren?

(3:31-34) Who is my mother
Jesus shows disrespect for his mother and family by asking, "Who is my mother, or my brethren?" when he is told that his family wants to speak with him.
How should parents be treated?

See Matthew 12:48.

34 And he looked round about on them which sat about him, and said, Behold my mother and my brethren!

35 For whosoever shall do the will of God, the same is my brother, and my sister, and mother.