CIC 672 Before his Ascension Christ affirmed that the hour had not yet come for the glorious establishment of the messianic kingdom awaited by Israel1 which, according to the prophets, was to bring all men the definitive order of justice, love and peace.2 According to the Lord, the present time is the time of the Spirit and of witness, but also a time still marked by “distress” and the trial of evil which does not spare the Church3 and ushers in the struggles of the last days. It is a time of waiting and watching.4

CIC 2612 In Jesus “the Kingdom of God is at hand.”5 He calls his hearers to conversion and faith, but also to watchfulness. In prayer the disciple keeps watch, attentive to Him Who Is and Him Who Comes, in memory of his first coming in the lowliness of the flesh, and in the hope of his second coming in glory.6 In communion with their Master, the disciples’ prayer is a battle; only by keeping watch in prayer can one avoid falling into temptation.7

CIC 2849 Such a battle and such a victory become possible only through prayer. It is by his prayer that Jesus vanquishes the tempter, both at the outset of his public mission and in the ultimate struggle of his agony.8 In this petition to our heavenly Father, Christ unites us to his battle and his agony. He urges us to vigilance of the heart in communion with his own. Vigilance is “custody of the heart,” and Jesus prayed for us to the Father: “Keep them in your name.”9 The Holy Spirit constantly seeks to awaken us to keep watch.10 Finally, this petition takes on all its dramatic meaning in relation to the last temptation of our earthly battle; it asks for final perseverance. “Lo, I am coming like a thief! Blessed is he who is awake.”11

1 Cf. Acts 1:6-7.
2 Cf. Is 11:1-9.
3 Cf. Acts 1:8; I Cor 7:26; Eph 5:16; I Pt 4:17.
4 Cf. Mt 25:1, 13; Mk 13:33-37; I Jn 2:18; 4:3; I Tim 4:1.
5 Mk 1:15.
6 Cf. Mk 13; Lk 21:34-36.
7 Cf. Lk 22:40, 46.
8 Cf. Mt 4:1-11; 26:36-44.
9 Jn 17:11; Cf. Mk 13:9, 23, 33-37; 14:38; Lk 12:35-40.
10 Cf. 1 Cor 16:13; Col 4:2; 1 Thess 5:6; 1 Pet 5:8.
11 Rev 16:15.