'Seventh Day' in the Bible
And if any man die very suddenly by him, and he hath defiled the head of his consecration; then he shall shave his head in the day of his cleansing, on the seventh day shall he shave it.
On the seventh day Elishama the son of Ammihud, prince of the children of Ephraim, offered:
He shall purify himself with it on the third day, and on the seventh day he shall be clean: but if he purify not himself the third day, then the seventh day he shall not be clean.
And the clean person shall sprinkle upon the unclean on the third day, and on the seventh day: and on the seventh day he shall purify himself, and wash his clothes, and bathe himself in water, and shall be clean at even.
And on the seventh day ye shall have an holy convocation; ye shall do no servile work.
And on the seventh day seven bullocks, two rams, and fourteen lambs of the first year without blemish:
And do ye abide without the camp seven days: whosoever hath killed any person, and whosoever hath touched any slain, purify both yourselves and your captives on the third day, and on the seventh day.