ISB ~ Acts 2 v1

Pentecost:One of three pilgrim feasts that required the adult men of Israel to travel to Jerusalem (Deut 16:16). It was a harvest festival celebrated 50 days after Passover, when the first loaves of bread from the spring wheat crop were dedicated as a firstfruits offering to the Lord (Lev 23:15-17). Over time, theological significance was added to its agricultural focus: Pentecost became a celebration of the Torah given to Israel on Mt. Sinai, with lectionary readings taken from Ex 19-20. For Christians, Pentecost celebrates the new law of the Spirit (Rom 8:2), written on the hearts of believers (Jer 31:31-34; 2 Cor 3:4-6), which surpasses the Law of Moses, inscribed on stone tablets (Ex 31:18).