The Word of God is Pure (Proverbs 30:5)

And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made. 

Let a little water, I pray you, be fetched, and wash your feet, and rest yourselves under the tree: 

It is a sign between me and the children of Israel for ever: for in six days the Lord made heaven and earth, and on the seventh day he rested, and was refreshed.

And they answered the angel of the Lord that stood among the myrtle trees, and said, We have walked to and fro through the earth, and, behold, all the earth sitteth still, and is at rest. 

And six years thou shalt sow thy land, and shalt gather in the fruits thereof:  But the seventh year thou shalt let it rest and lie still; that the poor of thy people may eat: and what they leave the beasts of the field shall eat. In like manner thou shalt deal with thy vineyard, and with thy oliveyard.

That which groweth of its own accord of thy harvest thou shalt not reap, neither gather the grapes of thy vine undressed: for it is a year of rest unto the land.