Let us pause a moment to reflect: it is not used in the past tense—God has come, nor in the future—God will come, but in the present—‘God comes.’ At a closer look, this is a continuous present, that is, an ever-continuous action: it happened, it is happening now and it will happen again. In whichever moment, ‘God comes.’ The verb ‘to come’ appears here as a theological verb, indeed theological, since it says something about God’s very nature. Proclaiming that ‘God comes’ is equivalent, therefore, to simply announcing God himself, through one of his essential and qualifying features: his being the God-who-comes.
Advent calls believers to become aware of this truth and to act accordingly. It rings out as a salutary appeal in the days, weeks and months that repeat: Awaken! Remember that God comes! Not yesterday, not tomorrow, but today, now!
The one true God, ‘the God of Abraham, Isaac and Jacob,’ is not a God who is there in Heaven, unconcerned with us and our history, but he is the-God-who-comes. He is a Father who never stops thinking of us and, in the extreme respect of our freedom, desires to meet us and visit us; he wants to come, to dwell among us, to stay with us. His ‘coming’ is motivated by the desire to free us from evil and death, from all that prevents our true happiness. God comes to save us.
Pope Benedict XVI from his homily at First Vespers of the First Sunday of Advent, Saturday, 2 December 2006