Jesus in the Old TestamentGod’s law inscribed on our hearts. The meaning of Shavuot. May 27, 2020April 6, 2021 Ester Shavuot is the biblical feast the Apostles celebrated when the Holy Spirit was poured out. It marked the giving of the Mosaic Law on Mount Sinai. And it foreshadows that day when God inscribes His Law on our hearts - through His Holy Spirit.