To Be Sober and Quiet.
Do not have so little reverence for the house and worship of God as to communicate with one another during the sermon. If those who commit this fault could see the angels of God looking upon them and marking their doings, they would be filled with shame and abhorrence of themselves. God wants attentive hearers. It was while men slept that the enemy sowed tares.
Not to Act as in a Common Place.
There should be a sacred spot, like the sanctuary of old, where God is to meet with His people. That place should not be used as a lunchroom or as a business room, but simply for the worship of God. When children attend day school in the same place where they assemble to worship on the Sabbath, they cannot be made to feel the sacredness of the place, and that they must enter with feelings of reverence. The sacred and common are so blended that it is difficult to distinguish them.
It is for this reason that the house or sanctuary dedicated to God should not be made a common place. Its sacredness should not be confused or mingled with the common everyday feelings or business life. There should be a solemn awe upon the worshipers as they enter the sanctuary, and they should leave behind all common worldly thoughts, for it is the place where God reveals His presence. It is as the audience chamber of the great and eternal God; therefore pride and passion, dissension and self-esteem, selfishness, and covetousness, which God pronounces idolatry, are inappropriate for such a place.
To Manifest No Spirit of Levity.
Parents, it is your duty to have your children in perfect subjection, having all their passions and evil tempers subdued. And if children are taken to meeting, they should be made to know and understand where they are--that they are not at home, but where God meets with His people. And they should be kept quiet and free from all play, and God will turn His face toward you, to meet with you and bless you.
CG 542-543