J. I. Packer, The Quest for Godliness:
We must never, therefore, let our Sundays become mere routine engagements; in that attitude of mind, we shall trifle them away by a humdrum formality. Every Sunday is meant to be a great day, and we should approach it expectantly, in full awareness of this.
Words of Grace 
I was glad when thy said to me “let us go up to the house of the LORD”