Whose law are Sunday and Christmas?

[World Mission Society Church Of God] Which one of the following sentences is right in the Biblical point of view?

1. Sunday is the worship day for God.
2. If you believe in God, you have to celebrate Christmas.
3. We go to church to worship God on Sun.
4. Let’s celebrate Jesus’s birthday on Dec 25.

Most people may think all the above sentences are right. But there is no the right answer.
In the sentences, there are the word, God or Jesus. That is the reason it is wrong.
Sunday servie and Christmas are nothing to do with God. Then how can we correct them to make it right?
Just change the word, God or Jesus to Sun-god.

Nowadays, Sunday service and Christmas have been the important traditions in most churches.
But we can not find out any will or meaning of God in the traditions. That is just Sun-god’s thing.

[Eze 8:13-16] “You will see them doing things that are even more detestable.”
Then he brought me to the entrance to the north gate of the house of the LORD, and I saw women sitting there, mourning for Tammuz. He said to me, “Do you see this, son of man? You will see things that are even more detestable than this.” He then brought me into the inner court of the house of the LORD, and there at the entrance to the temple, between the portico and the altar, were about twenty-five men. With their backs toward the temple of the LORD and their faces toward the east, they were bowing down to the sun in the east.”

God was angry and clearly told not to listen his prayer who worshiped Sun-god.
We can easily see that it is detestable thing to worship Sun-god in God’s temple.
Those who follow Sun-god’s law, saying the faith of God, fall into too big cognitive error.