I was touched by a story reported by Moody Bible Institute a few years ago. It concerned the Christian author, Stuart Briscoe.
Briscoe, as a young man, had gotten a job with a bank. One day, his boss told him, "If Mr. _______ calls for me, tell him I'm out."
Briscoe replied, "Oh, are you planning to go somewhere?"
"No, I just don't want to speak to him, so tell him I'm out."
"Let me make sure I understand--Do you want me to lie for you?"
The boss erupted in anger.
Stuart prayed quickly in his mind, and responded in a way, he believed, that would please God, "You should be happy, because if I won't lie for you, isn't it safe to assume that I won't lie to you?"
James 5:12b, Let your “Yes” be yes, and your “No,” no, or you will be condemned.