God (YHWH) is calling His people to return to His appointed times of celebration, where He has revealed His eternal plan of redemption in Messiah
Jesus (Lev. 23). The spring feasts celebrate Messiah's first coming as God's (YHWH's) Passover Lamb who takes away the sins of the world.
The Feast of First Fruits celebrates His resurrection as the "first fruits from among the dead" (1 Cor. 15:20). Pentecost celebrates
the giving of God's (YHWH's) Torah (Law) at Sinai and the outpouring of the Holy Spirit at Mt. Zion. This series includes: