“Watch!” This is the key word in the short passage that the Church presents for the liturgy of the first Sunday of Advent. To watch, to stay awake, to wait for the return of the master of the house, not to sleep, this is what Jesus asks of a Christian.
These four verses of the Gospel of Saint Mark are part of the eschatological discourse in chapter thirteen.
This chapter speaks of the destruction of the Temple and of the city of Jerusalem. Jesus takes up a point from the observation made by a disciple: “Master, look at the size of those stones!” (Mk 13: 1). Jesus, then, clarifies the idea: “You see these great buildings? Not a single stone will be left on another; everything will be pulled down” (Mk 13: 2). The Temple, the tangible sign of the presence of God in the midst of his chosen people, Jerusalem “built as a city, in one united whole” where “the tribes go up, the tribes of Yahweh, a sign for Israel to give thanks to the name of Yahweh” (Ps 122: 4), all this, the sure sign of the promise made to David, sign of the covenant, all this will be destroyed…
it is only a sign of something else to come.
The disciples, rendered curious, ask the Lord who is sitting on the mount of Olives in front of the Temple: “Tell us, when is this going to happen, and what sign will there be that it is all about to take place?” (Mk 13: 4). After the Jewish apocalyptic style inspired by Daniel, Jesus limits his reply to proclaiming the warning signs (false christs and prophets who will deceive by proclaiming the coming of the imminent times, persecutions, signs in the powers of heaven. cf.: Mk 13: 5-32), “But as for that day or hour, nobody knows it, neither the angels in heaven, nor the Son; no one but the Father” (Mk 13: 32).