Source: Talks with Sri Ramana Maharshi
D.: What is meant by taking the name of God? How to reconcile the following two ideas?
The Bible says: "Do not take the name of God in vain."
The Hindu sastras enjoin taking the name of God all the time.
M.: One should not use the name of God artificially and superficially without feeling. To use the name of God one must call upon Him and surrender to Him unreservedly. After such surrender the name of God is constantly with the man.
Please check these: Excerpts from a discourse by our Sri Sri Muralidhara Swamiji