John 19:7

The Jews replied, "We have a law which requires that he ought to die because he claimed to be the Son of God."

John 5:18

So, for this reason the Jews looked for more [opportunities] to kill Him, because He not only broke Sabbath day [restrictions], but also He had called God His own Father, [thereby] making Himself equal with God.

Matthew 26:63-66

But Jesus did not say anything. So, the head priest said to Him, "I command you [to swear] by the living God, [and] to tell us if you are the Christ [i.e., God's specially chosen one], the Son of God!"

Romans 1:4

He was appointed to be the Son of God with power through the Spirit of holiness [Note: This could refer to the Holy Spirit] when He was raised from the dead.

Matthew 27:42-43

"He saved other people, [but] he cannot [even] save himself [i.e., from dying]. He is 'the king of Israel;' let him now come down from the cross and then we will believe in him.

Mark 14:61-64

But Jesus kept quiet and did not give them any answer. Again the head priest asked Him, "Are you the Christ [i.e., God's specially chosen one]?"

Mark 15:39

And when the military officer in charge of one hundred men, who was standing in front of Jesus, saw Him die like that, he said, "Truly this man was the Son of God."

John 8:58-59

Jesus answered them, "Truly, truly, I tell you, before Abraham was born, I am." [Note: The words "I am" were probably construed as a reference to being Deity. See Ex. 3:14].

John 10:30-33

I and the Father are one."

John 10:36-38

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.

Treasury of Scripture Knowledge

Summary

The Jews answered him, We have a law, and by our law he ought to die, because he made himself the Son of God.

General references

Bible References

Because

John 5:18
So, for this reason the Jews looked for more [opportunities] to kill Him, because He not only broke Sabbath day [restrictions], but also He had called God His own Father, [thereby] making Himself equal with God.
John 8:58
Jesus answered them, "Truly, truly, I tell you, before Abraham was born, I am." [Note: The words "I am" were probably construed as a reference to being Deity. See Ex. 3:14].
John 10:30
I and the Father are one."
Matthew 26:63
But Jesus did not say anything. So, the head priest said to Him, "I command you [to swear] by the living God, [and] to tell us if you are the Christ [i.e., God's specially chosen one], the Son of God!"
Matthew 27:42
"He saved other people, [but] he cannot [even] save himself [i.e., from dying]. He is 'the king of Israel;' let him now come down from the cross and then we will believe in him.
Mark 14:61
But Jesus kept quiet and did not give them any answer. Again the head priest asked Him, "Are you the Christ [i.e., God's specially chosen one]?"
Mark 15:39
And when the military officer in charge of one hundred men, who was standing in front of Jesus, saw Him die like that, he said, "Truly this man was the Son of God."
Romans 1:4
He was appointed to be the Son of God with power through the Spirit of holiness [Note: This could refer to the Holy Spirit] when He was raised from the dead.

General references

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.