And thou shalt number seven sabbaths of years unto thee, seven times seven years; and the space of the seven sabbaths of years shall be unto thee forty and nine years.
Leviticus 23:15
And ye shall count unto you from the morrow after the sabbath, from the day that ye brought the sheaf of the wave offering; seven sabbaths shall be complete:
Genesis 2:2
And on the seventh day God ended his work which he had made; and he rested on the seventh day from all his work which he had made.