The man started out by saying he wasn't trying to sell me anything. Then he quoted a verse from Psalms about "soon the wicked will be no more." Then he asked if I was religious. I told him yes, then mentioned my website. Then he told me they have a website, too (jw.org), and I should check it out. I said I wasn't interested in Jehovah's Witnesses (a guess, but the "jw" in their website name gave me a clue), so he hung up.
Apparently, the Jehovah's Witnesses have a few new approaches to their normal "door knocking" routine. Maybe they think they can reach more people this way. I found a BBC article on the Internet that describes another approach. The article is entitled "The Jehovah's Witnesses' New Tactic" and includes many pictures. Here's the link, if you want to read it: http://www.bbc.com/news/magazine-28166192
If you are ever approached by members of that organization, don't be afraid of them. I found an article ("Witnessing to Jehovah's Witnesses - what is the key?") with a little background about what they believe and how to witness to them. Here's the link: http://www.gotquestions.org/witnessing-Jehovahs-Witnesses.html
. One very effective Bible passage to use is the one in the book of John about doubting Thomas:
-- John 20:24-28: "But Thomas, one of the twelve, called Didymus, was not with them when Jesus came. The other disciples therefore said unto him, We have seen the Lord. But he said unto them, Except I shall see in his hands the print of the nails, and put my finger into the print of the nails, and thrust my hand into his side, I will not believe. And after eight days again his disciples were within, and Thomas with them: then came Jesus, the doors being shut, and stood in the midst, and said, Peace be unto you. Then saith he to Thomas, Reach hither thy finger, and behold my hands; and reach hither thy hand, and thrust it into my side: and be not faithless, but believing. And Thomas answered and said unto him, My Lord and my God