"There is nothing common of itself" (Rom. xiv.14).
We can bring Christ into common things as fully as into what we call religious services. Indeed, it is the highest and hardest application of Divine grace, to bring it down to the ordinary matters of life, and therefore God is far more honored in this than even in things that are more specially sacred.
Therefore, in the twelfth chapter of Romans, which is the manual of practical consecration, just after the passage that speaks of ministering in sacred things, the apostle comes at once to the common, social and secular affairs into which we are to bring our consecration principles. We read: "Be kindly affectioned one to another with brotherly love; in honor preferring one another; not slothful in business; fervent in spirit; serving the Lord."
God wants the Levites scattered all over the cities of Israel. He wants your workshop, factory, kitchen, nursery, editor's room and printing-office, as much as your pulpit and closet. He wants you to be just as holy at high noon on Monday or Wednesday, as in the sanctuary on Sabbath morning.