"This light-bearing day has become the first and lady of days..."

Christ is risen! Truly He is risen!

The Sunday of St. Thomas, when Christ again appeared to His Disciples after His Resurrection (source)

   

This light-bearing day [Sunday] has become the first and lady of days, in which it is worthy for the new and divine people to rejoice. And as a type of the ages, it also forms the eighth day which is to come, He Who is greatly-exalted by us and our Fathers, blessed are You, O God.
-from the Matins Canon for the Sunday of St. Thomas
 
(source)
 

Christ is risen from the dead, by death, trampling down upon death, and to those in the tombs, He has granted life!

Truly the Lord is risen!