God says it is in Gen 2:3.
When God summarizes Gen 1-2:3 in Ex 20:11 He specifically says it is in Gen 2:3.
We need to believe "God" -- as it turns out.
And Christ affirms it in Mark 2:27 speaking both of the making of mankind and the making of the Sabbath in Creation week "the Sabbath was MADE for Mankind".
So obvious - even many Sunday Sources get this Bible point - of the Sabbath starting in Eden.
Oh Good -- Bible quotes instead of tired old "man made tradition" about the Commandments of God supposedly being dead.
Christ affirms it in Mark 2:27 speaking both of the making of mankind and the making of the Sabbath in Creation week "the Sabbath was MADE for Mankind"
"From Sabbath to Sabbath shall ALL MANKIND come before Me to worship" Is 66:23
Ex 20:11 "11 For in six days the Lord made the heavens and the earth, the sea and all that is in them, and rested on the seventh day; therefore the Lord blessed THE Sabbath day and made it holy." That is what God said He did in Gen 2:3.
Gen 2:1-3
Thus the heavens and the earth were completed, and all their hosts. 2By the seventh day God completed His work which He had done, and He rested on the seventh day from all His work which He had done. 3 Then God blessed the seventh day and sanctified it, because in it He rested from all His work which God had created and made.
"And Sanctified it" -- "And made it Holy" -- the same word.