dress, may dissipate every serious thought with which you entered the sanctuary. By this means, you will lose the benefit of the means of grace, and bring leanness upon your soul. Again; set a watch over your imagination. This is a time when Satan is particularly busy in diverting the fancy; and, unless you are doubly watchful, he will lead away your mind, by some phantom of the imagination, before you are aware of it. Keep these avenues of temptation guarded, and seek to bring yourself into a prayerful frame of mind, that you may be suitably affected by the various exercises of public worship. 4. _Unite in spirit with the devotional part of the service._ "God is a Spirit; and they that worship him must worship in spirit and in truth." Be particularly careful that you do not mock God in singing. This part of worship, I fear, is too often performed in a heartless manner. Try to sing with the _spirit_, as well as the understanding. And whenever you come to anything in the language of the psalm or hymn which you cannot adopt as your own, omit it. If you sing before him what you do not _feel_, you lie to him in your heart. And you know, by the terrible example of Ananias and Sapphira, how God regards this sin. In prayer, _strive_ to follow, in your heart, the words of the person who leads, applying the several parts of the prayer to yourself in particular, when they suit your case, and yet bearing in mind the various subjects of petition, which relate to the congregation and the world. In all the exercises of public worship, labor and strive against wandering thoughts. This is the time when Satan will beset you with all his fury. Now you must be well armed, and fight manfully. Be not discouraged, though you may be many times foiled. If you persevere in the strength of Jesus, you will come off conqueror at last.