One of the greatest discoveries for me in learning about Reformed Theology came in discovering the concept of the ordinary means of grace. What exactly is that all about? The ordinary means of grace are a part of the warmth and joy that is found in Reformed Theology. Wrestling with the attributes of God, sovereign election, particular redemption, and covenant theology can be quite hard. Those deep theological matters cannot be reduced to a bumper-sticker with a catchy phrase or hashtag. The ordinary means of grace present another aspect of Reformed Theology: finding joy in that which is simple.
In the 2nd London Baptist Confession, Particular Baptists defined the ordinary means of grace this way: “The grace of faith, by which the elect are enabled to believe so that their souls are saved, is the work of the Spirit of Christ in their hearts. Faith is ordinarily produced by the ministry of the Word. By this same ministry and by the administration of baptism and the Lord’s supper, prayer, and other means appointed by God, faith is increased and strengthened.” Notice that they identify the ministry of the Word, the sacraments or ordinances, and prayer as the ordinary means by which our faith is strengthened and assurance deepens. Other ordinary means of grace that can be identified, especially in a corporate worship gathering, are singing and fellowship. Reformed Baptist pastor Richard Barcellos offers this definition on the ordinary means of grace: “The delivery systems God has instituted to bring grace – that is, spiritual power, spiritual change, spiritual help, spiritual fortitude, spiritual blessings – to needy souls on earth.”
The beauty and richness of the ordinary means of grace comes shining forth when we consider how God uses the ordinary to bless us in an extraordinary way. Are we comprehending just how nourishing the proclamation of the Word is when the Bible is read, explained, and applied to our hearts? This is why Jesus told Simon Peter in John 21 to feed and nourish the flock of Christ. The ministry of the Word is not just the means of the Spirit’s effectual call and regenerating work among the unconverted; it is also the means by which the saints are nourished and strengthened. Growing up in a more fundamentalist Baptist background, the memorial view of the Lord’s Supper was so ingrained that understanding of Christ’s spiritual presence at the Table seemed almost Romish to me. However, as I have learned more, I have come to realize not just the historic Baptist view of the Supper as both a memorial and spiritual nourishment but that the Scriptures teach this as well. 
As one might deduce, the ordinary means of grace are connected to the fellowship and assembly of the local church. How magnificent is our Lord to remind us through these means of how we are a covenant people together in need of encouragement, strength, and reminders of who we are in Christ. I often tell people that if you believe Reformed Theology is found only in T-U-L-I-P then you are missing out on what the real meaning of doctrines of grace is. Reformed theology changes your outlook on everything. It changed my outlook on preaching as I come to more and more find rest and solace in the sovereignty of the Spirit in the Word. Reformed Theology’s teaching on the ordinary means of grace deepens my appreciation for the Christian Sabbath and gathering on the Lord’s Day. Every Scripture reading, prayer, hymn, ordinance, reading of creeds/confessions/catechisms, and time together fellowshipping over the Word are the channels by which the Spirit refreshes, matures, corrects, and settles my weary heart as a pilgrim. So, when you gather this coming Lord’s Day, do not think that simple worship means ineffective or backwards. Rather, meditate upon the extraordinary power of God unleashed in the ordinary means of grace!
 See: https://vimeo.com/287451369 for a recent sermon I preached on this topic.