The Hebrew word for “appointed times” refers to a set date and time to meet, like an appointed meeting. Those “meetings” are called “holy convocations,” which simply means “holy assemblies.” So, the “appointed times” are “holy assemblies” (meeting days) when the Israelites would come together before God for the purpose of celebrating their relationship with Him and to remember what He had done, and continued to do, for them.
In Leviticus 23, God lists seven appointed times for His people to gather: weekly Sabbath (Leviticus 23:3), the annual Feast of Passover and Unleavened Bread (Leviticus 23:5–8), the annual Feast of First Fruits (Leviticus 23:9–14), the annual Feast of Weeks (“Shavuot/Pentecost,” Leviticus 23:15–22), the annual Feast of Trumpets (“Rosh Hashanah,” Leviticus 23:23–25), the annual Day of Atonement (“Yom Kippur,” Leviticus 23:26–32), and the annual Feast of Booths (“Sukkot/Tabernacles,” Leviticus 23:33–36, 39–43).
The Lord’s appointed times were specific to the nation of Israel and, therefore, are not directly relevant to us. However, we can learn at least three things about God through them.
First, we learn that He is an orderly God. He appointed times for the Israelites to assemble together just as He has appointed weekly times for His church to gather. Just like He defined what happened during those times, He also defines what is to be done during gatherings of the church. While we have flexibility, He expects our focus to be on ways to glorify Jesus, including singing (Ephesians 5:19), baptizing (Matthew 28:19), communion (1 Corinthians 11:23–26), and listening to His word being preached (Acts 2:42). Just like how the Israelites gathered weekly on the Sabbath as He appointed, He has similarly appointed the Lord’s Day (Sunday) for the church to gather weekly (Acts 20:7; c.f., Revelation 1:10).
Second, the appointed times were not days of drudgery, but days of joy and celebration. Through them we learn that our God is a gracious God who gives joy to His people. While our celebrations now, except for Sunday, are not fixed “appointed times,” with Christians having flexibility as to which holidays they celebrate (Romans 14:5–6), everything God does is for our joy and His glory.
Third, as we think about Jesus’ current and future fulfillment of those holidays, we also marvel at the greatness of God’s unsearchable wisdom (Psalm 145:3), seeing how He worked carefully and methodically through history and how He continues to work today.