"For we are strangers before thee and sojourners, as were all our fathers; our days on the earth are as a shadow, and there is none abiding." 1 Chronicles 29:15
If you possess the faith of Abraham, Isaac, and, Jacob, you, like them, confess that you are a stranger; and your confession springs out of a believing heart and a feeling experience. You feel yourself a stranger in this ungodly world; it is not your element, it is not your home. You are in it during God's appointed time, but you wander up and down this world a stranger to its company, a stranger to its maxims, a stranger to its fashions, a stranger to its principles, a stranger to its motives, a stranger to its lusts, its inclinations, and all in which this world moves as in its native element. Grace has separated you by God's distinguishing power, that though you are in the world, you are not of it.
I can tell you plainly, if you are at home in the world; if the things of time and sense be your element; if you feel one with the company of the world, the maxims of the world, the fashions of the world, and the principles of the world, grace has not reached your heart, the faith of God's elect does not dwell in your bosom. The first effect of grace is to separate. It was so in the case of Abraham. He was called by grace to leave the land of his fathers, and go out into a land that God would shew him. And so God's own word to his people is now, "Come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you, and will be a Father unto you, and ye shall be my sons and daughters, saith the Lord Almighty."
Separation, separation, separation from the world is the grand distinguishing mark of vital godliness. There may be indeed separation of body where there is no separation of heart. But what I mean is, separation of heart, separation of principle, separation of affection, separation of spirit. And if grace has touched your heart, and you are a partaker of the faith of God's elect, you are a stranger in the world, and will make it manifest by your life and conduct that you are such.