“What does that little yellow wrench on the dash board mean? ” My bride must not have seen it before. “It means it’s time to to change the engine oil,” I explained. Routine maintenance is a part of owning and keeping an automobile if one wants it to last for a few years. Some people do, while others change cars yearly, and/or don’t drive enough to worry about such issues. Jude (next to last book in the Bible) reminds us that as Believers we need “routine maintenance” if we are going to be Spiritually healthy. In verse 20, he (writing under the inspiration  of the Holy Spirit),  gave us some…