13 We bless the Lord our God, who gathered us together to spiritual joy. Let us be ever in humility of heart, and let our joy be with Him. Let us not be elated with any prosperity of this world, but know that our happiness is not until these things shall have passed way. Now, my brethren, let our joy be in hope: let none rejoice as in a present thing, lest he stick fast in the way. Let joy be wholly of hope to come, desire be wholly of eternal life. Let all sighings breathe after Christ. Let that fairest one alone, who loved the foul to make them fair, be all our desire; after Him alone let us run, for Him alone pant and sigh; “and let them say always, The Lord be magnified, that wish the peace of His servant.”
Source: Tractates on the Gospel of John (New Advent)