What does Leviticus 19:12 say in the KJV?

And ye shall not swear by my name falsely, neither shalt thou profane the name of thy God: I am the LORD.

A commandment given to the Israelites regarding the use of God's name.

King James Version (public domain)

Traditionally attributed to Moses · c. 13th century BC · The Pentateuch — Genesis, Exodus, Leviticus, Numbers, and Deuteronomy — is traditionally attributed to him

Context

10And thou shalt not glean thy vineyard, neither shalt thou gather every grape of thy vineyard; thou shalt leave them for the poor and stranger: I am the LORD your God.

11Ye shall not steal, neither deal falsely, neither lie one to another.

12And ye shall not swear by my name falsely, neither shalt thou profane the name of thy God: I am the LORD.

13Thou shalt not defraud thy neighbour, neither rob him: the wages of him that is hired shall not abide with thee all night until the morning.

14Thou shalt not curse the deaf, nor put a stumblingblock before the blind, but shalt fear thy God: I am the LORD.