" ... It shall be a statute forever throughout your generations, 10 that you may distinguish between holy and unholy, and between unclean and clean, 11 and that you may teach the children of Israel all the statutes which the LORD has spoken to them by the hand of Moses." (Leviticus 10:9-11)
Very often we hear that life is divided into that which is secular, and that which is sacred. The secular sphere is that which has to do with politics, business, medicine, and so forth; the sacred is that which has to do with worship, payer, family life, and so on. Those who hold this view count the secular as worldly, and the sacred as Christian. Those who are sacred will have as little to do with secular activities as is possible, and those who engage in secular activities want nothing to do with the sacred, and do not want aspects of the sacred spilling into the sphere of the secular. Such a view does not concord with the Scriptures.
From God's perspective, all of life belongs to Him, and all of life is either lived to His glory, or for the glory of someone or something else. That which is lived for God's glory is holy and clean; that which is lived for the glory of someone or something else is unholy or unclean. Therefore, there is clean and unclean politics; clean and unclean medicine; clean and unclean prayer; clean and unclean worship; clean and unclean family life; clean and unclean teaching, and so on. There is holy and unholy politics; holy and unholy medicine; holy and unholy business; holy and unholy worship, and so on.
The notion of separation of church and state has been twisted and perverted in modern times. The church is not to impinge on the role of the state, and the state is not to impinge on the role of the church. However, the church is only clean and holy when it functions within its limits as defined by the law of God, and also, the state is only clean and holy when it functions within its limits as defined by the law of God. In our modern times, because of the imposition of the secular/sacred model, both the state and many churches have become unclean and unholy.
The nation follows the church. It was the church which moved its position first, and it must be the church which returns to a state of holiness and cleanness first. How do we do this, you may ask? Simply: "Repent of sin (sin is the transgression of the law) and believe the Gospel, returning to a life of obedience to the commandments of Jesus."
Pastors, ministers, priests, bishops, teach us, the flock of Jesus Christ, all the commandments of the Lord; plead with us to repent of our sinful ways; pray for us that we would be sanctified by the word, blood and Spirit of the Lord Jesus Christ; help us to live for the glory of His name and for the extension of His Kingdom, in time and on earth. Amen!