It is trying to cure diseases, or to practice any other kind of superstition, by the name of God or a passage from the Bible.
48. How do we lie and deceive by the name of God?
By perjury, false teaching, and hypocrisy.
Matt. 15:9. In vain they do worship me, teaching for doctrines the commandments of men.
Titus 1:16. They profess that they know God; but by their works they deny Him.
49. What must he expect who takes the name of God in vain?
Great punishment, both in time and eternity; for the Lord will not hold him guiltless that taketh His name in vain.
50. How do we use the name of God properly?
When we sincerely call upon the name of God in every time of need, and worship Him with prayer, praise, and thanksgiving.