Old Testament: Exodus 12:1-14

http://www.biblegateway.com/passage/?search=Exodus%2012%3A1-14

Epistle:1 Cor. 11:23-32

http://www.biblegateway.com/passage/?search=1%20Cor.%2011%3A23-32

Holy Gospel:John 13:1-15

http://www.biblegateway.com/passage/?search=John%2013%3A1-15