This crossword puzzled is based on the use if the Greek word apostolos. It basically refers to 'one who is sent'. So, when Jesus called his disciples apostles, he was saying, "you are my sent ones".
So, based on the Greek word, we will find more who are sent, that the first 14 we usually think of, don't let that throw you too much. This file, has two pages. It was designed to be printed on both sides of one sheet of paper. The first sided, is the crossword and the clues, and the clues will work best with the NIV probably, since it is from that version, that the words that fill in the blank spaces on the crossword puzzle are based.
The second page or flip side, is the answer key, so be careful not to see it, if you want to solve the crossword puzzle without 'cheating'.
The puzzle is here.
The above link, is way clearer and designed for printing. A crude version, without the answer key, can also be seen below, but it is not nearly as clear: