John 19:7

the Jews answered him, 'We have a law, and according to our law he ought to die, for he made himself Son of God.'

John 5:18

because of this, then, were the Jews seeking the more to kill him, because not only was he breaking the sabbath, but he also called God his own Father, making himself equal to God.

Leviticus 24:16

and he who is execrating the name of Jehovah is certainly put to death; all the company do certainly cast stones at him; as a sojourner so a native, in his execrating the Name, is put to death.

Matthew 26:63-66

and Jesus was silent. And the chief priest answering said to him, 'I adjure thee, by the living God, that thou mayest say to us, if thou art the Christ -- the Son of God.'

Romans 1:4

who is marked out Son of God in power, according to the Spirit of sanctification, by the rising again from the dead,) Jesus Christ our Lord;

Deuteronomy 18:20

Only, the prophet who presumeth to speak a word in My name -- that which I have not commanded him to speak -- and who speaketh in the name of other gods -- even that prophet hath died.

Matthew 27:42-43

'Others he saved; himself he is not able to save! If he be King of Israel, let him come down now from the cross, and we will believe him;

Mark 14:61-64

and he was keeping silent, and did not answer anything. Again the chief priest was questioning him, and saith to him, 'Art thou the Christ -- the Son of the Blessed?'

Mark 15:39

and the centurion who was standing over-against him, having seen that, having so cried out, he yielded the spirit, said, 'Truly this man was Son of God.'

John 8:58-59

Jesus said to them, 'Verily, verily, I say to you, Before Abraham's coming -- I am;'

John 10:30-33

I and the Father are one.'

John 10:36-38

of him whom the Father did sanctify, and send to the world, do ye say -- Thou speakest evil, because I said, Son of God I am?

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

We have

Leviticus 24:16
and he who is execrating the name of Jehovah is certainly put to death; all the company do certainly cast stones at him; as a sojourner so a native, in his execrating the Name, is put to death.
Deuteronomy 18:20
Only, the prophet who presumeth to speak a word in My name -- that which I have not commanded him to speak -- and who speaketh in the name of other gods -- even that prophet hath died.

Because

John 5:18
because of this, then, were the Jews seeking the more to kill him, because not only was he breaking the sabbath, but he also called God his own Father, making himself equal to God.
John 8:58
Jesus said to them, 'Verily, verily, I say to you, Before Abraham's coming -- I am;'
John 10:30
I and the Father are one.'
Matthew 26:63
and Jesus was silent. And the chief priest answering said to him, 'I adjure thee, by the living God, that thou mayest say to us, if thou art the Christ -- the Son of God.'
Matthew 27:42
'Others he saved; himself he is not able to save! If he be King of Israel, let him come down now from the cross, and we will believe him;
Mark 14:61
and he was keeping silent, and did not answer anything. Again the chief priest was questioning him, and saith to him, 'Art thou the Christ -- the Son of the Blessed?'
Mark 15:39
and the centurion who was standing over-against him, having seen that, having so cried out, he yielded the spirit, said, 'Truly this man was Son of God.'
Romans 1:4
who is marked out Son of God in power, according to the Spirit of sanctification, by the rising again from the dead,) Jesus Christ our Lord;

General references

Daniel 6:5
Then these men are saying, 'We do not find against this Daniel any cause of complaint, except we have found it against him in the law of his God.'
Mark 14:64
Ye heard the evil speaking, what appeareth to you?' and they all condemned him to be worthy of death,