God requires his priests, shepherds, pastors, and people to separate themselves.
God is concerned about his reputation with the nations.
God is Jehovah. He is also called Yahweh.
His people were to honor his name.
They were to be a light to the nations to show them God's salvation plan for all mankind.
Let me show you.
Here is a search in the bible for the word "profane".
Read this for yourself.
God is concerned for his reputation!
This related to how his priests cared for holy objects, for the temple, for the use of his name, and to do things which honor God's name. Do you see that God took the Israelites out of slavery as a witness to the nations of what he would do for those who came into covenant with him?
I will make a simple transfer for you: Do not use the Lord's name in profanity. Now, we use the terms "Jesus", "Christ", and "Holy....". We should not use any of these names with disrespect. When we ask Jesus in, if we see ourselves still doing this, we need to ask God for help to remove the spirit of Profanity from us. Then, our challenge to obey will be easier. In the Old Testament, were one to curse the Lord's name, they were put to death. In the future, when Christ comes, and think on the fact that people could live 1000 years, were they to curse Christ's name, they would be put to death. This is a cultural norm we need to become used to. We are to bless not curse the Lord's holy name. In God's grace, he reaches out to those who even curse him when he greets them. As we grow in the Lord, we are to put off profanity. We are not to curse God's name.
Please consider this. Calling upon the name of the Lord is our salvation. He is our only hope.
Jeremiah 9: 23-24
Thus saith the Lord, Let not the wise man glory in his wisdom, neither let the mighty man glory in his might, let not the rich man glory in his riches; But let him that glorieth glory in this, that I am the Lord which exercise lovingkindness, judgment, and righteousness, in the earth: for in these things I delight, saith the Lord.