Mark 13:31-37

31 The heaven and the earth shall pass away, but my words shall in no wise pass away.
32 But of that day or of that hour no one knows, neither the angels who are in heaven, nor the Son, but the Father.
33 Take heed, watch and pray, for ye do not know when the time is:
34 [it is] as a man gone out of the country, having left his house and given to his bondmen the authority, and to each one his work, and commanded the doorkeeper that he should watch.
35 Watch therefore, for ye do not know when the master of the house comes: evening, or midnight, or cock-crow, or morning;
36 lest coming suddenly he find you sleeping.
37 But what I say to you, I say to all, Watch.
The Darby Translation is in the public domain.