ANSWER: It is the general voice of the Scriptures that the whole creation was finished in six days. See Ex. 20:11 and 31:17. There is a good reason for the opinion of A. Clarke that this is a mistake of a transcriber who read the sixth letter of the Hebrew alphabet for the seventh, which very closely resembles it. The Jews did not have our nine digits but used letters instead. The Greek version, made about 200 B. C., and quoted in the New Testament more than 1,000 times, reads, "God ended his work on the sixth day." Thus reads also the Samaritan Hebrew, and the Syriac version.
— Steele's Answers p. 181.