As God has said to His people in ages gone by, so He says to you today, “I am the LORD thy God, which brought thee out of the land of Egypt. Open thy mouth wide and I will fill it” (Psalm 81:10). This promise pertains to all of God’s blessings and one of those blessings is that we would be filled with His Spirit. So as you come to partake of the Lord Jesus Christ, remember that you also partake of His Spirit and He invites you to open your mouth as wide as possible. 

One of the reasons Christians grow stagnant in faith and obedience is because they forget just how powerful and active the Spirit is. God has far more food than you can ever eat. This meal is far more potent than those among us with the greatest faith can comprehend. This being true, why not expect great things from God and attempt great things for Him? Do you really think that His Spirit is constrained by your bad habits? Ah, you think far too highly of your habits. Send them into the ring against this bread and wine and watch. Come in faith and welcome to Jesus Christ.