In this Holy Bible words spoken by Jesus are printed with red color. These red color letter show at a glance to the reader that he is reading words by Jesus not compiler of book. The idea about printing Bible with red letter / label come from Bible verse Luke 22:20 – This cup is the new testament in my blood, which I shed for you.
On June 19, 1899, Louis Klopsch, who later bacame editor of The Christian Herald magazine, conceived the idea about printing the word of Jesus in red letter. Rev. T. De Witt Talmage approved this idea. Louis Klopsch published the first red-letter New Testament in 1899. The first version of Bible printed in 1901 with red letter. The format became popular because in this style quotation marks are not used.