LawrenceOP-Fan
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The Blessed Trinity. "God our Father, you revealed the great mystery of your godhead to men when you sent into the world the Word who is Truth and the Spirit who makes us holy. Help us to believe in …More
The Blessed Trinity.

"God our Father, you revealed the great mystery of your godhead to men when you sent into the world the Word who is Truth and the Spirit who makes us holy. Help us to believe in you and worship you, as the true faith teaches: three Persons, eternal in glory, one God, infinite in majesty. Through our Lord Jesus Christ, your Son, who lives and reigns with you in the unity of the Holy Spirit, one God, for ever and ever. Amen." Stained glass from the church of Santo Domingo in La Laguna, Tenerife.

Source: Lawrence OP on Flickr
SvataHora
This type of picture is called "Sorrowful trinity".