When the congregation is to meet for public worship, the people, (having before prepared their hearts thereunto) ought all to come and join therein; not absenting themselves from the public ordinances through negligence, or upon pretence of private meetings.
Let all enter the assembly, not irreverently, but in a grave and seemly manner, taking their seats or places without adoration, or bowing themselves towards one place or another.
The congregation being assembled, the minister, after solemn calling on them to the worshipping of the great name of God, is to begin with prayer...
The public worship having begun, the people are wholly to attend upon it, forbearing to read anything, except what the minister is then reading or citing; and abstaining much more from all private whisperings, conferences, salutations, or doing reverence to any person present, or coming in; as also from all gazing, sleeping, and other indecent behaviour, which may disturb the minister or people, or hinder themselves or others in the service of God.
If any, through necessity, be hindered from being present at the beginning, they ought not, when they come into the congregation, to betake themselves to their private devotions, but reverently to compose themselves to join with the assembly in that ordinance of God which is then in hand.
(From the Westminster "Directory For The Public Worship Of God"; 1645)