Answer:
Jesus didn't sin. He's God's son.
Jesus died on the cross cause God sent him to die on the cross for OUR sins.
You see, when God made the world, it use to be perfect before Adam and Eve were tempted by Satan and sinned. Since then, the world waxed worse and worse.
So, since God loved is so much, He sent his son Jesus Christ to die on the cross for our sins.
You see, God made this place called Heaven, a place where people after they die go if the accepted his son Jesus into their hearts, and he made a place called Hell, a place where people after they die go if they didn't accept Jesus into their heart and believe in him.
So, God gave us a choice, a choice to believe and accept his son into our hearts, or not to. Hell is not a great place. Heaven is.
I hope this makes sense a bit, I was kinda in a rush writing this so i hope some of it makes sense.
ALSO..........
A man named Judas Iscariot betrayed Jesus and turned him in to the Pharisees for 30 pieces of silver, a price of a slave back then. So, that's why. And then Jesus was put on trial with another man who ACTUALLY SINNED, and the people wanted the other man to go free and hang Jesus, an innocent man, on the cross.
I was gonna compare this to nowadays, but nahhhh.
So, Jesus did not sin, cause he is God the Son.
Hope I made sense, and Hope this helps.
Explanation: