In the Psalms prayer takes the form of a pouring out of the heart (42:4; 62:8; 100:2, title). The psalmist does not seem to go before God with fixed and orderly petitions so much as simply to pour out his feelings and desires, whether sweet or bitter, troubled or peaceful. Consequently the prayers of the psalmist consist of varying moods: complaint, supplication, confession, despondency, praise. True prayer consists of such elements as adoration, praise, petition, pleading, thanksgiving, intercession, communion, waiting. The closet into which the believer enters to pray is not only an oratory --a place of prayer, it is an observatory--a place of vision. Prayer is not "A venture and a voice of mine; but a vision and a voice divine." Isa. 63:7; 64:12, illustrates all essential forms of address in prayer. III. THE POSSIBILITY OF PRAYER. This possibility consists in five things: 1. THE REVELATION OF GOD WHICH CHRIST HAS BROUGHT TO US. John 1:18--"No man hath seen God at any time; the only-begotten Son, which is in the bosom of the Father, he hath declared him." Matt. 11:27--". . . . Neither knoweth any man the Father, save the Son, and he to whomsoever the Son will reveal him." Christ reveals God as a _personal_ God, as a Being who sees, feels, knows, understands, and acts. Belief in the personality of God is absolutely necessary to true prayer (Heb. 11:6). Christ reveals God as a _sovereign_ God (Matt. 19:26)--"With God all things are possible." God is sovereign over all laws; He can make them subservient to His will, and use them in answering the prayers of His children. He is not bound by any so-called unchangeable laws. Christ revealed God as a _Father_ (Luke 11:13). In every instance in the life of Christ whenever He addresses God in prayer it is always as Father. The fact of the fatherhood of God makes prayer possible. It would be unnatural for a father not to commune with his child. 2. THE SACRIFICIAL WORK OF JESUS CHRIST. Heb. 10:19-22, R. V.--"Having therefore, brethren, boldness to enter into the holy place by the blood of Jesus, by the way which he dedicated for us, a new and living way, through the veil, that is to say, his flesh; and having a great priest over the house of God; let us draw near with a true heart in fulness of faith." It is because of the death of Christ, which removed the barrier that stood between God and us so that He could not consistently hear and answer our prayers, that He can now hear and answer the petitions of His children. 3. THE INSPIRATION OF THE HOLY GHOST.