JAS 5:12

12 Also, my fellow believers, [I want to say] something important [about how you talk]. [If you say that you will do something], do not say, “If I do not do it, may [God in] heaven [MTY] punish me.” Do not even say, “If I do not do it, may [someone here on] earth [MTY] punish me.” Do not say anything like that. Instead, if you say “Yes,” then [do what you said that you would do]. If you say “No,” then do not [do it]. Otherwise, [God] will condemn you.