1-By no means jews put themselves above god
2-Jesus only got of the hook so many times because he refused to give a direct anwer.
3-In the end was the son of god thing that ended up killing him.
4-Jews didn't just forgive sins, they did it by a sacrifice (That christians believe to represent jesus.), and this sacrifice and the way it should be done was decided by God. So god was the one forgiving sins.
5-You should read the full chapters by youself instead of just some parts. this
Is not Jesus or god, but Psalms. Which were just music and poetry from the jewish people, not the world of god.
Here is one: "Jesus stepped into a boat, crossed over and came to his own town. 2 Some men brought to him a paralytic, lying on a mat. When Jesus saw their faith, he said to the paralytic, “Take heart, son; your sins are forgiven.”
3 At this, some of the teachers of the Law said to themselves, “This fellow is blaspheming!”
4 Knowing their thoughts, Jesus said, “Why do you entertain evil thoughts in your hearts? 5 Which is easier: to say, ‘Your sins are forgiven,’ or to say, ‘Get up and walk’? 6 But so that you might know that the Son of Man has authority on earth to forgive sin . . . .” Then he said to the paralytic, “Get up, take your mat and go home.”
7 And the man got up and went home. 8 When the crowd saw this, they were filled with awe, and they praised God, who had given such authority to men."
In this specific part as in many others they didn't killed Jesus because they were afraid that the people would go against them.
"The chief priests and the scribes heard this, and began seeking how to destroy Him; for they were afraid of Him, for the whole crowd was astonished at His teaching."- Mark 11:18
"And they were seeking to seize Him, and yet they feared the people, for they understood that He spoke the parable against them. And so they left Him and went away."- Mark 12:12