Sacrifice: Means to offer or give God something that is ours. In the Old Testament the people offered animals and food which they burned on their altars.
Lev. 1. 2, 3. 4, 5, 6
Jesus himself became a sacrifice when He died on the Cross. Jesus gave up His life.
1 Cor. 15:3
The Divine Liturgy
We participate in Christ’s sacrifice. We offer bread and wine to God and He accepts our gift changing them unto the body and blood of Jesus Christ.
Jesus took St. Peter, James and John up to a mountain. When they reached the top, Jesus changed (Transfiguration). His face shown bright as the SUN and His clothes were as white as snow. JESUS SHOWED HIMSELF AS GOD then changed back as usual to them.