What is the Sin?

???From the Christian point of view, sin is a state of being. It is not a matter of choice for us;it is human nature to sin.

They believe that we inherit the Original Sin committed by our Parents, Adam and Eve, in primordial time.

???To Muslims, sin is the deliberate violation of a divine commandment, and humans are answerable for it because they choose to sin despite their ability to avoid it.

But as humans are gifted with choice and free will in this world, they may be seduced from their inherent nature of goodness and fall into sin.

In that case, Divine Guidance still helps them to remain true to their original status of intrinsic goodness.Their pure nature does not change.

Islam sees all prophets as infallible as regards intentional, active sin, not because they were divine, but because God created them with a super-human ability to resist sin.They made mistakes, they got angry, but they did not sin.

Prophets are indeed the best of creation.They are those whom God chooses to receive His  revelations And they are sinless and they are best models.

2_In the bible 

According to Bible Jesus was sinner, base on ROMANS 5:12
Therefore, just as sin entered the world through one man, and death through sin, and in this way death came to all people, because all sinned,

This was confirmed by book of HEBREWS 5:2-3 He is able to deal gently with those who are ignorant and are going astray, since he himself is SUBJECT to WEAKNESS. This is why he has to offer sacrifices for his OWN SINS, as well as for the sins of the people.

 John the Baptist preaching a baptism of repentance for the forgiveness of sins, ironically Jesus himself got baptised before his starts his ministries by John the Baptist! 

MARK 1:4  >And so John the Baptist appeared in the wilderness, preaching a baptism of repentance for the forgiveness of sins.

MARK 1:9 >  At that time Jesus came from Nazareth in Galilee and was baptized by John in the Jordan.

3_In the bible 

??Matthew 5:22
And anyone who says, ‘You fool!’ will be in danger of the fire of hell.

??Matthew 23:33
33 “You snakes! You brood of vipers! How will you escape being condemned to hell?

Compare the saying of Jesus, "Who said, O fool,

And he said, "O children of snakes, is not this a curse that requires the fire of hell by the judgment of Jesus himself?

??John 13:4

4 so he got up from the meal, took off his outer clothing, and wrapped a towel around his waist.

From the errors of the Lord, he was naked in front of his disciples and Mary Magdalene at the Last Supper. What did he want  to teach you from this incident?