Communion and foot washing
When reading the accounts of the Lord's Supper in the four Gospels, it is not always easy to determine the order in which the events took place. The following table, together with the accompanying explanation, helps make the sequence easier to follow.
Structure of the book "Revelation"
The Book of Revelation contains various messages and visions. It is reasonable to conclude that they follow a definite structure. An attempt to illustrate this structure can be downloaded here.