Do not be willing to contaminate your souls, nor shall you touch any of these, lest you become unclean
Other versions
King James Version
Ye shall not make yourselves abominable with any creeping thing that creepeth, neither shall ye make yourselves unclean with them, that ye should be defiled thereby. English Standard Version
You shall not make yourselves detestable with any swarming thing that swarms, and you shall not defile yourselves with them, and become unclean through them.New International Version
Do not defile yourselves by any of these creatures. Do not make yourselves unclean by means of them or be made unclean by them.