I think it is really important that you listen to this 11 minute homily.
SYNOPSIS:On Holy Thursday we simultaneously contemplate the sin of Judas and the institution of the Eucharist. There are two hymns from the matins canon that perfectly explain the greatest sin of Judas – it was not avarice, but to not be angry against sin. This is important to know, and apply to your life. Be angry in a godly way, and become godly. Many partake of communion without understanding why, or what it does. Another hymn from the canon perfectly explains this. We should know why we do things, and how we should do them. Learn from these two hymns the essence of Christianity.
Lacking all conscience, he received the Body that delivers men from sin and the divine Blood that was shed for the world. He was not ashamed to drink what he had sold for money, he felt no anger against sin, for he knew not how to cry, #39;O ye works of the Lord praise ye the and exalt Him above all for ever#39;.
Since I am man not merely in appearance but in reality, the human nature united to Me is made godlike through the exchange of attributes. Know Me, then, as one single Christ, who saves those among whom I have been born and whose nature I have taken.(Canon, Ode 8,9, Matins for Holy Thursday)