“Guard yourselves in your spirit,” says Malachi 2:16 in the Bible, “and do not be faithless to the wife of your youth.” The men of Judah had been trading in their wives for younger women and God was calling them into repentance. “The way you keep yourself from sin, is to guard your spirit.”. As married people we should guard our thoughts against thinking negatively about our spouse. Guard our eyes from whatever distracts us. And guard our boundaries so an inappropriate relationship doesn’t form.