The two principal parts of the liturgy of Holy Communion, the proclamation of the Word of God and the celebration of the sacramental meal, are so intimately connected as to form one act of worship.
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Our congregations are encouraged to hold these two parts together, avoiding either a celebration of the Supper without the preceding reading of the Scriptures, preaching, and intercessory prayers or a celebration of the Supper for a few people who remain after the dismissal of the congregation from a service of the Word. The Holy Communion is not simply appended to the offices of Morning or Evening Prayer.
Principles for Worship – Evangelical Lutheran Church in America.