Today is the feast of Transfiguration. 

Troparion - Tone 7

You were Transfigured on the Mount,
O Christ God,
Revealing Your glory to Your disciples
as far as they could bear it.
Let Your everlasting Light shine
upon us sinners!
Through the prayers of the Theotokos,
O Giver of Light, glory to You!

Kontakion - Tone 7

On the Mountain You were Transfigured, O Christ God,
And Your disciples beheld Your glory as far as they could see it;
So that when they would behold You crucified,
They would understand that Your suffering was voluntary,
And would proclaim to the world,
That You are truly the Radiance of the Father!