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:
And ye shall count unto you from the morrow after the sabbath,.... Not the seventh day sabbath in the passover week, nor the whole feast of unleavened bread, but the first day of it, which was an holy convocation, a sabbath in which no servile work was to be done,
Leviticus 23:7; and it was from the day after this, even the sixteenth of Nisan, that the following count was to be made; so the Targum of Jonathan, after the first feast day of the passover: and Josephus {s} is very clear in it, that Pentecost, or the feast of weeks, was the fiftieth day from the sixteenth of Nisan, when the above offerings were made:
from the day that ye brought the sheaf of the wave offering; which plainly points out the express day from whence the count was to begin, even on the day when the sheaf of the firstfruits of the barley harvest was offered:
seven sabbaths shall be complete; or seven weeks, that is, forty nine days; and hence, Jarchi says, we learn that the count began from the evening, or otherwise the weeks would not be complete; and Gersom thinks the day in which the sheaf was offered is included in the days counted; for the count began from the day after the first of the passover, and lo, seven days are seven weeks of days, which make forty nine days.
{s} Antiqu. l. 3. c. 10. sect. 6.