The WMSCOG keeps the law of Christ established by Jesus, God who came in the flesh 2,000 years ago.
One is the Old Covenant, the Law of Moses in the Old Testament Age, and the other is the New Covenant, the Law of Christ renewed by Jesus in the New Testament Age.

Shall we check the Bible?

[1 Corinthians 9:20-21] And unto the Jews I became as a Jew, that I might gain the Jews; to them that are under the law, as under the law, that I might gain them that are under the law; To them that are without law, as without law, (being not without law to God, but under the law to Christ,) that I might gain them that are without law.

Apostle Paul said that he was a Christian under the law of Christ who believed in Jesus, but he acted like a Jew to get those under the law, that is, the Jews.

The Bible clearly tells us about the law of Moses and the law of Christ. Then why did Christ allow the law of Christ again even though there is the law of Moses?

[Hebrews 8:7-13] For if that first covenant had been faultless, then should no place have been sought for the second. For finding fault with them, he saith, Behold, the days come, saith the Lord, when I will make a new covenant with the house of Israel and with the house of Judah: ......
In that he saith, A new covenant, he hath made the first old. Now that which decayeth and waxeth old is ready to vanish away.

The first covenant refers to the law of Moses in the Old Testament. 'If that first covenant had been faultless,' it means that the first covenant had flaws. The law itself is perfect, but we, as sinners, cannot keep it wholeheartedly. That is the reason why God established a new covenant again. God established New Covenant to save us.

[Matthew 5:17] Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.

In other words, 'the law of Moses' was changed into 'the law of Christ' by Christ when he came into the world 2,000 years ago to save humanity. That is why the WMSCOG (World Mission Society Church of God) keeps the law of Christ.

The Law of Christ was established by Jesus in the Church of God! Let's keep the 7-New Covenant Feasts, including the Sabbath and the Passover, to receive the blessing of salvation and move forward together toward the kingdom of heaven.