Bobby Gross, the director of graduate and faculty ministries for InterVarsity Christian Fellowship, writes:
We can, in effect, sacralize time itself. To sacralize something, according to Merriam-Webster, is to “imbue [it] with sacred character, especially through ritualized devotion.” We find compelling examples of sacralized time in Scripture when God declares the sabbath holy, when he ordains annual festivals for Israel and when the early Christians, in light of the resurrection, shift worship to the first day of the week. Over the centuries, the church has fittingly sacralized time by means of the liturgical calendar with its practices and celebrations, and we can fruitfully appropriate this pattern in our personal discipleship and devotion. 
But how does inhabiting the Story of God in liturgical time actually shape our lives? Here is the simple answer: by remembering and anticipating. Scholars sometimes employ the Greek words anamnesis [an-am-nee-sis] and prolepsis [proh-lep-seez] to describe these spiritual transactions.
As you might suspect, the first of these terms relates to the familiar idea of amnesia, the loss of memory. Anamnesis means the opposite: remembrance, recalling to mind, or literally “the drawing near of memory.” Jesus at his Last Supper said, “This is my body, which is given for you. Do this in anamnesis of me” (Lk 22:19). When we take part in Communion, we do more than simply remember; in some spiritual way we bring the past into our present experience. Laurence Stookey describes this type of ritual as “an active kind of remembrance,” one “by doing rather than by cognition.” We identify with Jesus and vicariously participate in his life in a way that brings spiritual dividends to our own.
If anamnesis brings the past to bear in the present, prolepsis does something similar with the future. The literal meaning of the word is “to take beforehand,” and we use it to represent a future event as if it had already been accomplished. […] The experience of prolepsis is perhaps more mysterious than anamnesis, but in those acts that anticipate “the hope to which he has called you,” we receive a kind of spiritual down payment, as Paul puts it: a “pledge of our inheritance toward redemption as God’s own people” (Eph 1:14, 18). The future comes into our present experience. […] This bringing of the past and the future into the present is the work of the Holy Spirit. 
By some mysterious grace, the light of the Christ who lived in history comes into our present experience with spiritual power, and the hope of the Christ who will return in glory to renew all things also brings power into our lives. Eternity intersects Time. Keeping the Christian year helps us to live at that intersection. 
 Bobby Gross, Living the Christian Year: Time to Inhabit the Story of God (Downers Grove: IVP, 2009), 21.
 Gross, 30-31.
 Gross, 32.