Feast of the Transfiguration of the Lord | August 6. The feast of the Transfiguration {Mt. 17:1-9, Mk 9:2-12 Lk. 9:28-36} has always been a proclamation that assures us that Jesus Christ is truly the Lord, shining with the glory of God: “light from light, true God from true God”, as we say in the creed.