All Bible believers, Christian or not, operate a Pick and Mix approach to how they practice their religion. So, it is a case of you " Pays your money and takes your Choice" for them.
Very hypocritical, and VERY annoying when they try to impose some of the things they have decided to pick , upon others of us ! All the while they are ignoring the rest of what is commanded in their Holy books.
A good book on this is by a Jewish guy who tried to do what was in the Title , i. e. " A Year of Living Biblically", he really couldn't do it, but he consulted many religions on this, including JW's, and concluded NOBODY could live in the modern world and live Biblically !