“Now, when the Creator God spoke as recorded in Exodus 20:1, what did He (Jesus) say? As we read on, we find this statement: ‘for in six days the LORD made the heavens and the earth, the sea, and all that is in them, and rested the seventh day’ (Exodus 20:11).”
“Yes, Jesus did explicitly say He created in six days. Not only this, but the one who spoke the words ‘six days’ also wrote them down for Moses: ‘Then the LORD delivered to me two tablets of stone written with the finger of God, and on them were all the words which the LORD had spoken to you on the mountain from the midst of the fire in the day of the assembly’ (Deuteronomy 9:10).”
“Jesus said clearly that He created in six days. And He even did something He didn’t do with most of Scripture – He wrote it down Himself. How clearer and more authoritative can you get than that?” (K. Ham, The New Answers Book 1, 2006, p. 258).
There is another reason to believe that Moses’ explanatory statement, “For in six days the Lord made heaven and earth, the sea, and all that in them is…” was not spoken by the Lord. The phrase following the fourth commandment in Deuteronomy 5:15 says: And remember that thou wast a servant in the land of Egypt, and that the Lord thy God brought thee out thence through a mighty hand and by a stretched out arm: therefore the Lord thy God commanded thee to keep the sabbath day. According to E. W. Bullinger, this verse is a parenthetical break in Moses’ recital of the fourth commandment, in view of their shortly having servants of their own (The Companion Bible, 1974, p. 246). If we agree with Bullinger regarding the parenthetical statement in Deuteronomy 5:15 then we can infer that Moses’ statements, after reciting the fourth commandment, in Exodus 20:11 and 31:17b could also be parenthetical in nature.
In Deuteronomy, Moses’ comments, after reciting the fourth commandment (“and remember that thou wast a servant in the land of Egypt…”), are historical remembrance; as the Israelites were freed from slavery in Egypt, they should allow their own slaves one day of rest per week. This is in keeping with Deuteronomy’s humanistic emphasis and concern for the social good.