""As a yearling lamb, for us a crown of goodness, the Blessed One..."

Christ is risen! Truly He is risen!

Christ symbolized as the Lamb of God, Who was slain and is alive again, on the throne before the seven seals (Revelation 5), 7th Century Mosaic, Church of Sts. Cosmas and Damian in Rome (source)

  

"The Lord spake unto Moses and Aaron in the land of Egypt, saying, This month shall be to you the beginning of months: it is the first to you among the months of the year. Speak to all the congregation of the children of Israel, saying, On the tenth of this month let them take each man a lamb according to the houses of their families, every man a lamb for his household. And if they be few in a household, so that there are not enough for the lamb, he shall take with himself his neighbor that lives near to him, as to the number of souls, every one according to that which suffices him shall make a reckoning for the lamb. It shall be to you a lamb unblemished, a male of a year old: ye shall take it of the lambs and the kids. And it shall be kept by you till the fourteenth of this month, and all the multitude of the congregation of the children of Israel shall kill it toward evening. And they shall take of the blood, and shall put it on the two door-posts, and on the lintel, in the houses wherein they shall eat it. And they shall eat the flesh in this night roast with fire, and they shall eat unleavened bread with bitter herbs. Ye shall not eat of it raw nor sodden in water, but only roast with fire, the head with the feet and the appurtenances. Nothing shall be left of it till the morning, and a bone of it ye shall not break; but that which is left of it till the morning ye shall burn with fire. And thus shall ye eat it: your loins girded, and your sandals on your feet, and your staves in your hands, and ye shall eat it in haste. It is a Passover to the Lord."

-Exodus 12:1-11,
reading during the Vesperal Liturgy of St. Basil on Great and Holy Saturday
(source)
  

Christ, the Good Shepherd and the Lamb of God (source)

  
"Christ appeared as a ‘male’ who opened the virgin womb. As our food he is called ‘lamb’; ‘unblemished’, as our Passover without stain; and ‘perfect’, for he is true God.
  
"As a yearling lamb, for us a crown of goodness, the Blessed One, the cleansing Passover has been sacrificed for all; and from the tomb the fair Sun of justice has shone for us again."
-from the Paschal Canon of St. John of Damascus
  

Christ as the Lamb of God in the Holy Chalice, surrounded by the Holy Angels (source)

  

Christ has risen from the dead, by death he has trampled on death, and to those in the graves given life!

Truly the Lord is risen!