Mark 2:7

"Why does this man talk this way? He is speaking against God. Who can forgive sins except one, that is, God?"

Mark 14:64

You [yourselves] have heard him speaking against God. What do you people think [i.e., about such statements]?" And they all condemned Him as deserving the death penalty.

John 10:36

how can you people say to Him, whom the Father set apart and sent into the world, 'You are speaking abusively [i.e., about God],' because I said, 'I am the Son of God'? He is the One whom the Father set apart [i.e., for His service] and sent into the world.

Matthew 9:3

Seeing this, certain experts in the law of Moses said to themselves, "This man is speaking against God."

Matthew 26:65

Then the head priest tore at his clothing [i.e., as an expression of frustration], saying, "He has spoken against God [i.e., by claiming Deity for Himself]. What additional need do we have for witnesses? Look, you [yourselves] have now heard him speaking against God.

Luke 5:21

Then the experts in the law of Moses and the Pharisees began to reason [in their minds], saying, "Who is this man who speaks things against God [i.e., by claiming the ability to forgive sins]? Who can forgive sins except God only?"

Luke 7:49

And those who were reclining at the [dinner] table with Him began saying among themselves, "Who is this person who can even forgive sins?"

John 10:33

The Jews answered Him, "We are not stoning you for a good deed, but for your abusive speech [i.e., about God], and because you are claiming to be God, even though you are [only] a man."

John 20:20-23

After saying this, Jesus showed them His hands and His side, so they rejoiced when they saw the Lord [i.e., now convinced that He had indeed risen from the dead].

Treasury of Scripture Knowledge

Summary

Why doth this man thus speak blasphemies? who can forgive sins but God only?

General references

Bible References

Speak

Mark 14:64
You [yourselves] have heard him speaking against God. What do you people think [i.e., about such statements]?" And they all condemned Him as deserving the death penalty.
Matthew 9:3
Seeing this, certain experts in the law of Moses said to themselves, "This man is speaking against God."
Matthew 26:65
Then the head priest tore at his clothing [i.e., as an expression of frustration], saying, "He has spoken against God [i.e., by claiming Deity for Himself]. What additional need do we have for witnesses? Look, you [yourselves] have now heard him speaking against God.
John 10:33
The Jews answered Him, "We are not stoning you for a good deed, but for your abusive speech [i.e., about God], and because you are claiming to be God, even though you are [only] a man."

Who

Luke 5:21
Then the experts in the law of Moses and the Pharisees began to reason [in their minds], saying, "Who is this man who speaks things against God [i.e., by claiming the ability to forgive sins]? Who can forgive sins except God only?"
Luke 7:49
And those who were reclining at the [dinner] table with Him began saying among themselves, "Who is this person who can even forgive sins?"
John 20:20
After saying this, Jesus showed them His hands and His side, so they rejoiced when they saw the Lord [i.e., now convinced that He had indeed risen from the dead].

General references

John 20:23
Whosever sins you forgive, they will be forgiven [by God]. And whosever sins you do not forgive, they will not be forgiven [by God]." [Note: Actual forgiveness would result only when people responded, by faith, to the Gospel message. See Acts 2:37-38].