From the Treasury of Daily Prayer:

Having celebrated the greatest event in God’s history of salvation, the death and resurrection of the Son of God, we pause a bit at the Feast of the Holy Trinity to consider the essence of God. Certainly the essence of God is beyond our weak comprehension, but He has graciously revealed Himself to us as Father, Son, and Holy Spirit. When we want to summarize all the Holy Scripture says about God as our Creator, Redeemer, and Sanctifier, we call Him the Holy Trinity. Even beyond the glorious summary of the persons and work of God found in the Creeds, to speak of God as the Holy Trinity says at one time all the many things that the Scriptures say about God. Our worship never ceases confessing our faith in the triune God and giving glory to the Father and to the Son and to the Holy Spirit; as it was in the beginning, is now, and will be forever. Amen.