There are many things which it would be pleasing to God for us to do which He has not specifically commanded us. A true child is not content with merely doing those things which his father specifically commands him to do. He studies to know his father’s will, and if he thinks that there is any thing that he can do that would please his father, he does it gladly, though his father has never given him any specific order to do it. So it is with the true child of God. He does not ask merely whether certain things are commanded or certain things forbidden. He studies to know his Father’s will in all things.There are many Christians today who are doing things that are not pleasing to God, and leaving undone things which would be pleasing to God. When you speak to them about these things they will confront you at once with the question, “Is there any command in the Bible not to do this thing?” And if you cannot show them some verse in which the matter in question is plainly forbidden, they think they are under no obligation whatever to give it up; but a true child of God does not demand a specific command. If we make it our study to find out and to do the things which are pleasing to God, He will make His study to do the things which are pleasing to us. Here again we find the explanation of much unanswered prayer. We are not making it the study of our lives to know what would please our Father, and so our prayers are not answered.

How to Pray by R.A. Torrey