Sunday Is a Day to Pay Our Devotions unto God
Doctrine and Covenants 59:10, 12
10 For verily this is a day appointed unto you to rest from your labors, and to pay thy devotions unto the Most High . . .
12 . . . Remember that on this, the Lord’s day, thou shalt offer thine oblations and thy sacraments unto the Most High, confessing thy sins unto thy brethren, and before the Lord.
President John Taylor said:
“I appreciate as a great privilege the opportunity we enjoy of worshipping God on the Sabbath day. And when we do meet to worship God, I like to see us worship Him with all our hearts. I think it altogether out of place on such occasions to hear people talk about secular things; these are times, above all others perhaps, when our feelings and affections should be drawn out towards God. If we sing praises to God, let us do it in the proper spirit; if we pray, let every soul be engaged in prayer, doing it with all our hearts, that through our union our spirits may be blended in one, that our prayers and our worship may be available with God, whose Spirit permeates all things, and is always present in the assemblies of good and faithful Saints.”
(Teachings of Presidents of the Church: John Taylor , 108.)