No one knows about that day or hour: This statement introduces the warning to be watchful (compare Acts 1:7) and not to make guesses about the exact time of these events (Mark 13:33–37).
Jesus calls himself the Son who ranks above the angels in an order that begins with no one and ends with only the Father. The authenticity of this saying is supported by the limitation it places on the Son’s knowledge. The early church would not likely have invented such a statement. In later apocryphal gospels (books outside the New Testament written around AD 150–300), writers usually increased and praised the divine attributes of Jesus (for example, the Infancy Gospel of Thomas).
In the miracle of the incarnation, Jesus experienced limitation (Mark 10:40; 13:32). If the Son himself did not know the day or hour, Christians should refrain from seeking such knowledge for themselves.