8 And you shall count off seven Sabbaths of years—seven times seven years—so that the seven Sabbaths of years amount to forty-nine years.
Leviticus 25:8 Cross References - BSB
Genesis 2:2
2 And by the seventh day God had finished the work He had been doing; so on that day He rested from all His work.
Leviticus 23:15
15 From the day after the Sabbath, the day you brought the sheaf of the wave offering, you are to count off seven full weeks.