As of September 2015, many sources note that Hal Lindsey has been divorced three times and that he is currently married to a fourth wife. However, his official biographies do not mention his wives, and this information is gleaned from other sources.
Many sites that note Lindsey's divorces do so in the context of quoting biblical strictures against remarriage to undermine his credibility, so official recognition of his divorces is unlikely. However, because Lindsey dedicates his books to his wives, his marital history is roughly approximated by comparing the dedications on his books published at different times. This is how unofficial sources have come to the three divorce figure.