King James Version
Or if a soul swear, pronouncing with his lips to do evil, or to do good, whatsoever it be that a man shall pronounce with an oath, and it be hid from him; when he knoweth of it, then he shall be guilty in one of these.English Standard Version
or if anyone utters with his lips a rash oath to do evil or to do good, any sort of rash oath that people swear, and it is hidden from him, when he comes to know it, and he realizes his guilt in any of these;New International Version
"'Or if a person thoughtlessly takes an oath to do anything, whether good or evil-in any matter one might carelessly swear about-even though he is unaware of it, in any case when he learns of it he will be guilty.