Leviticus 23:15-16 Lev. 23:15-16
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: 16 Even unto the morrow after the seventh sabbath shall ye number fifty days; and ye shall offer a new meat offering unto the LORD.
Acts 2:1 Acts 2:1
And when the day of Pentecost was fully come, they were all with one accord in one place.
(Relation)