The liturgical church year is not a mechanical operation done merely out of ‘tradition’ or without thought. It is a means of spiritual growth for the community of faith, for that community is, in this time between Christ’s comings, bound in time and living in time with the rhythms of the solar year and the seasons and the history of Christ’s salvific activity at the time of His Incarnation and through His people in history.
It is salutary, therefore, to meditate upon its purpose. Here’s Guerric of Igny for Advent 3:
We are waiting now for the anniversary day of Christ’s birth, which we shall shortly see, God willing. Scripture requires, it seems to me, that our spirit should be so lifted up and transported with joy that it longs to run towards the approaching Christ; and, projecting itself into the future, it chafes at delays as it strains to see what is yet to come. I think myself that the many passages in Scripture exhorting us to hasten towards him refer not only to the second coming but also to the first. How so? Because just as, at his second coming, we shall run towards him with physical energy and joy, so do we hasten to Bethlehem with jubilant heart and spirit. You know that at the resurrection, having put on new bodies, according to the Apostle’s teaching we shall be caught up in the clouds to meet Christ in the air, and so we shall be with the Lord for ever. (1 Thess. 4:16) But even here there is no lack of clouds that will carry our spirits (provided they are not sluggish and earthbound) to higher things, and then we shall be with the Lord for half an hour. Unless I am mistaken, you know from experience what I am talking about, for sometimes when the clouds have thundered, that is when the voices of the prophets and apostles have rung out in the Church, your minds have been swept aloft as though borne on clouds, and on occasion been carried so far beyond that they have been favoured with some glimpse of the glory of the Lord. Then, if I am right, the truth of that word dawned clear for you, the word which God rains down from the cloud he daily appoints to bear us aloft: ‘The sacrifice of praise do me honour: there is the path by which I will show him the salvation of God.’ (Pss. 103:3, 49:23) -P. M. Matarasso, The Cistercian World, pp. 130-31.