'Weeks' in the Bible
And thou shalt keep the feast of weeks, of the firstfruits of the reaping of the wheat, and the feast of ingathering at the year's end.
But if she gives birth to a maid child, then she shall be unclean two weeks, according to her separation, and she shall be purifying herself for sixty-six days from her blood.
Also in the day of the firstfruits, when ye offer a new present unto the LORD in your fulfilled weeks, ye shall have a holy convocation; ye shall do no servile work.
Seven weeks shalt thou number unto thee; begin to number the seven weeks from such time as thou shalt begin to put the sickle to the grain.
And thou shalt do the solemn feast of weeks unto the LORD thy God; out of the voluntary abundance of thy hand thou shalt give, according as the LORD thy God has blessed thee.
Three times each year shall all thy males appear before the LORD thy God in the place which he shall choose: in the solemn feast of unleavened bread and in the solemn feast of weeks and in the solemn feast of the tabernacles. And they shall not appear before the LORD empty,
that each thing might be offered in its day, according to the commandment of Moses, on the sabbaths and on the new moons and on the feasts three times in the year, that is in the feast of unleavened bread and in the feast of weeks and in the feast of the tabernacles.
Neither do they say in their heart, Let us now fear the LORD our God that gives rain, both the former and the latter, in its season; he shall keep us with the appointed weeks of the harvest.
Seventy weeks are determined upon thy people and upon thy holy city to finish the prevarication and to conclude the sin and to make reconciliation for iniquity and to bring in everlasting righteousness and seal the vision and the prophecy, and to anoint the Holy of Holies.
Know therefore and understand that from the going forth of the word to cause the people to return and to build Jerusalem unto the Anointed Prince, there shall be seven weeks, and sixty-two weeks, while the street shall be built again and the wall, even in troublous times.
And after the sixty-two weeks the Anointed One shall be killed and shall have nothing: (and the ruling people that shall come shall destroy the city and the sanctuary; whose end shall be as a flood, until at the end of the war it shall be cut off with desolation).
In those days I, Daniel, was mourning three weeks of days.
I ate no pleasant bread, neither did flesh nor wine come into my mouth, neither did I anoint myself at all until the three weeks of days were fulfilled.