ISB ~ Mark 13 v35

Watch therefore:The command to be vigilant operates on several levels. (1) The earliest Christians, still worshipping in the Jerusalem Temple (Lk 24:52), must be prepared to flee the city before its downfall (13:14-16). (2) Everyone must be ready for his personal judgment by God (2 Cor 5:10). (3) The Church must persevere in holiness while awaiting Jesus’ Second Coming at the end of time (Acts 1:11; 1 Thess 1:10). The Gospels elsewhere focus

on similar themes of watchfulness and accountability (14:32-42; Mt 24:45-51; 25:1-13; Lk 19:11-27; CCC 2612, 2849). evening … midnight … cockcrow … morning: Names for the four “watches” of the night between 6 P.M. and 6 A.M. See note on Mk 6:48.