child of God will be frequent in praying to his heavenly Father;
service which himself never commanded? Surely not. Now, to this duty of secret prayer, the Lord has again and again promised an open reward, Matt 6:6,18. And therefore without question, this is a duty incumbent upon all Christians.
4. Fourthly, Our Savior in the text takes it for granted that every child of God will be frequent in praying to his heavenly Father; and therefore he encourages them so much the more in the work of secret prayer. "When you pray;" as if he had said, I know you can as well hear without ears, and live without food, and fight without hands, and walk without feet, as you are able to live without prayer. And therefore when you go to wait on God, or to give your heavenly Father a visit, "Enter into your closet, and shut your doors," etc.
5. Fifthly, If closet prayer is not an indispensable duty that Christ has laid upon all his people, why does Satan so much oppose it? why does he so industriously and so unweariedly labor to discourage Christians in it, and to take off Christians from it? Certainly, Satan would never make such a fierce and constant war as he does upon private prayer, were it not a necessary duty, a real duty, and a soul-enriching duty. But more of this you will find in the following discourse; and therefore let this touch suffice for the present, etc.
Now, these five things do very clearly and evidently demonstrate that secretly and solitarily to hold fellowship with God is the undoubted duty of every Christian. But for a more full opening and confirmation of this great and important point, I shall lay down these twenty arguments or considerations to persuade you to closet prayer.
[1.] First, The most eminent saints, both in the Old and New Testament, have applied themselves to private prayer. Moses was alone in the mount with God forty days and forty nights, Exod 34:28. So Abraham fills his mouth with