Christian doctrine has been divided into four main periods of time and has evolved in stages. The earliest doctrines were the Ten Commandments given through Moses, and this period is referred to as the time of the Law. The Ten Commandments (the Law) are divided into two commandments: love of God and love of neighbor. In order to love God, we must come to God, and this is done through the festivals of Sabbath, Passover... and the Feast of Tabernacles. The feasts are the only way to approach God, and in order to love God, we must keep the feasts. The second commandment, to love our neighbor, is fulfilled through the fifth through tenth commandments of the Ten Commandments. Therefore, this period of law-keeping is called the time of the Law.

The 1500 years of law were fulfilled in Jesus. All the laws kept in the temple were types and shadows of what Jesus would do, so the sacrificial animals sacrificed for the sins of the people and the high priest entering the holy of holies on the Day of Atonement and handing over all sins to Asherah foreshadowed what Jesus would do. Jesus' death fulfilled the prophecy of the sacrificial animals sacrificed for the sins of the people, his ascension fulfilled the prophecy of the high priest entering the holy of holies where God is, and his casting of Satan from heaven to earth fulfilled the prophecy of handing over all sins to Asherah and casting him into the wilderness. And the coming of the Holy Spirit to make the bodies of the saints into a temple was the fulfillment of the prophecy of the Feast of Tabernacles. Just as Israel, having completed the Day of Atonement, cut down trees on the mountain to build a tent (tabernacle) and dwelt in it, so Jesus, having fulfilled the prophecy of the Day of Atonement, fulfilled the prophecy of the Feast of Tabernacles by coming by the Holy Spirit to make the bodies of the saints into a temple. In this way Jesus fulfilled all the law according to the order of the feasts, so that the sacrifices (feasts) for the remission of sins need no longer be kept. (Hebrews 10:18)

The law, which had been observed for 1500 years, was fulfilled by Jesus. When the Holy Spirit came upon the body of believers and taught them to love, all the laws of loving God and loving our neighbor were fulfilled. The commandment of love was passed on by the apostles who received the Holy Spirit, and this period is called the apostolic age. (1 Corinthians 3:16)

The apostolic age, established through the Holy Spirit, was completed in AD70 with the destruction of Israel. The period that followed is the Church Fathers' age. After the death of the apostles, the church split into the Eastern Church, centered in Jerusalem, and the Western Church, centered in Rome. Representatives of each church claimed orthodoxy, claiming that they were the successors of the apostles. The first dispute between the Eastern and Western churches was over the Lord's Supper: the Eastern Church celebrated the Lord's Supper after fasting from the evening of January 13 of the Jewish calendar until 3 p.m. on the 14th, the day of Jesus' fateful death, while the Western Church celebrated the Lord's Supper after fasting from the 14th until the Lord's Day, the day of Jesus' resurrection. The controversy was resolved at the Council of Nicaea in 321, and the Lord's Supper was celebrated on Sunday. During the Church Fathers' era, many new doctrines were created: the Lord's Supper was changed to Sunday worship, tithing was revived in the third century, crosses were erected in churches, and the doctrine of the Trinity was added. The Church Fathers' era, which began in AD70, ended with the death of Johannes, bishop of the Eastern Church, in AD749.

With the end of the age of the Fathers, the Church entered the age of the Scholastics. Scholasticism began with the study of the Bible by a few bishops, which evolved into catechesis and led to many new doctrines. Lent, the witch hunts, the Inquisition, modern worship, and many other new doctrines were created during the Scholastic era, and Christian seminaries today are remnants of the Scholastic era.

But as the Scholastic era drew to a close, another era emerged. In 1844, with the advent of the Sabbath advocates and the rise of the Pentecostal and Feast of Tabernacles churches, there was suddenly a reinterpretation of the Old Testament law, with Sabbath and Passover... Feast of Tabernacles churches emerged, and this period is called the revival of the Law Age.

The Bible and the doctrines of Christianity have passed from the time of the Law, to the time of the Apostles, to the time of the Fathers and the Scholastics, and finally to the time of the New Law, with countless variations. As they say, the world goes around, and what was before is again, and what was done is being done again.

[Ecclesiastes 3:15] Whatever is has already been, and what will be has been before; and God will call the past to account.