Verses with the word blaspheme in the Old Testament (4 verses):

2 Samuel 12:14
Howbeit, because by this deed thou hast given great occasion to the enemies of the LORD to blaspheme, the child also that is born unto thee shall surely die.

1 Kings 21:10
And set two men, sons of Belial, before him, to bear witness against him, saying, Thou didst blaspheme God and the king. And then carry him out, and stone him, that he may die.

1 Kings 21:13
And there came in two men, children of Belial, and sat before him: and the men of Belial witnessed against him, even against Naboth, in the presence of the people, saying, Naboth did blaspheme God and the king. Then they carried him forth out of the city, and stoned him with stones, that he died.

Psalms 74:10
O God, how long shall the adversary reproach? shall the enemy blaspheme thy name for ever?