The day of Pentecost (Acts 2:1) occurred on the fiftieth ("pente") day following the resurrection of Jesus from the dead (on the Feast of Firstfruits--Leviticus 23:9-14). Pentecost corresponds to the Jewish Feast of Weeks (Leviticus 23:15-22), also known as Shavuot. Jesus, through the Holy Spirit, fulfilled this Jewish Feast by coming onto many people in power, filling them, and causing them to speak with other tongues and languages (Acts 2:2-4).