Let the words of Wayne Grudem encourage you to pray today:
Prayer is not made so that God can find out what we need. Jesus tells us, “Your Father knows what you need before you ask him” (Matt. 6:8). God wants us to pray because prayer expresses our trust in God and is a means whereby our trust in him can increase. In fact, perhaps the primary emphasis of the Bible’s teaching on prayer is that we are to pray with faith, which means trust or dependence on God. God as our Creator delights in being trusted by us as his creatures, for an attitude of dependence is most appropriate to the Creator-creature relationship.
Praying in humble dependence also indicates that we are genuinely convinced of God’s wisdom, love, goodness, and power—indeed of all of the attributes that make up his excellent character. When we truly pray, we as persons, in the wholeness of our character, are relating to God as a person, in the wholeness of his character. Thus all that we think or feel about God comes to expression in our prayer. It is only natural that God would delight in such activity and place much emphasis on it in his relationship with us.
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Wayne Grudem, Systematic Theology, Second Edition (p. 493). Zondervan Academic. Kindle Edition.