In Mark 7:6-13 "Commandment of God" , "Word of God" and "Moses said" are all used in the same context.
John 17:17 "Thy Word is Truth"
Ps 119:142 "thy LAW is Truth"
Deut 5:5 "the Word of the LORD" is Law
Mark 7 "Commandment of God" = "Word of God"
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And yet there is...