This is an old article but the lesson can apply to a Christian’s celebration of X Mass and Easter. It is not a small thing nor is it a matter of Christian liberty but, rather, a matter of obedience. Please take God seriously!
Back before I was saved, I decided I was going to read the Bible from start to finish. My husband at the time had a Bible, but he hadn’t read much of it. I picked it up one day and started at Genesis. Genesis, Exodus, Leviticus, half way through Numbers. I was done. I didn’t understand any of it and I thought it was a stupid book. There were things in Leviticus, in particular, that set me off. I didn’t know why they called it Leviticus, but I thought they should have named it Ridiculous. It all seemed downright silly to me. Why would God care if the people wore one kind of fabric with another kind of fabric? In Leviticus 19:19, it says, “You shall not let your livestock breed with another kind. You shall not sow your field with mixed seed. Nor shall a garment of mixed linen and wool come upon you.”
Years ago, I didn’t understand. Today, it makes complete sense. In this law, God was telling His people that they were to be set apart from the surrounding pagan nations. God is holy; He is pure. It was God’s desire that His people understand His holiness and purity. Therefore, in all that the people would do, the LORD would have them be reminded of His holiness and purity. From their livestock, to their fields, to their clothing, God was continually reminding them not to mix the holy with the unholy, the pure with the impure. As a people, they were not to mix with the surrounding pagan nations and in their lives before a holy God, they were to remember God’s holiness in all that they did.
Read the rest of the short article here.