Those seasons were - in the spring, summer, and autumn, namely, the feast of the Passover, that of Pentecost, and that of Tabernacles. It is worthy observation, that in after ages, under the gospel state, the Lord Jesus was crucified on the one; namely, the Passover, which that solemn service typified: and the Holy Ghost descended during the commemoration of the other; namely, the feast of Pentecost, which confirmed also that great ordinance of God. See Matthew 26:2; Acts 2:1-2.
Related Commentaries of Exodus 23:14
Exodus 23:14-17
14 Three times thou shalt keep a feast unto me in the year.
15 Thou shalt keep the feast of unleavened bread: (thou shalt eat unleavened bread seven days, as I commanded thee, in the time appointed of the month Abib; for in it thou camest out from Egypt: and none shall appear before me empty:)
16 And the feast of harvest, the firstfruits of thy labours, which thou hast sown in the field: and the feast of ingathering, which is in the end of the year, when thou hast gathered in thy labours out of the field.
17 Three times in the year all thy males shall appear before the Lord GOD.