The earliest manuscripts of the New Testament do not use punctuation. In fact, there are no spaces between words either. In addition to this, all the letters were like our upper case (capital) letters (uncial). Thus a Greek sentence would look something like this if English letters were used:

GODSOLOVEDTHEWORLDTHATHEGAVEHISONLYSON.

• The first punctuation mark was the period.
• Periods and commas are the same as the English
  (.) and (,).
• The English semicolon is used for the question mark.
• The semicolon in Greek uses a dot above the line (like a raised period. This serves in place of both the English colon and semicolon.