Genesis 27:20

But Isaac said unto his son, "How cometh it that thou hast found it so quickly my son?" He answered, "The LORD thy God brought it to my hand."

And he said, "LORD God of my master Abraham, send me good speed this day, and show mercy unto my master Abraham.

"Thou shalt not take the name of the LORD thy God in vain, for the LORD will not hold him guiltless that taketh his name in vain.

Will ye make an answer for God with lies, and maintain him with deceit?

Treasury of Scripture Knowledge

And Isaac said unto his son, How is it that thou hast found it so quickly, my son? And he said, Because the LORD thy God brought it to me.

"Thou shalt not take the name of the LORD thy God in vain, for the LORD will not hold him guiltless that taketh his name in vain.

Will ye make an answer for God with lies, and maintain him with deceit?

And he said, "Thy brother came with subtlety, and hath taken away thy blessing."