Mark 13:32-37

32But of that day or of that hour no one knows, neither the angels who are in heaven, nor the Son, but the Father. 33Take 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. 35Watch therefore, for ye do not know when the master of the house comes: evening, or midnight, or cock-crow, or morning; 36lest coming suddenly he find you sleeping. 37But what I say to you, I say to all, Watch.