Combined Triangle, Trinitarian, Dove Symbol

This trefoil shape also includes a descending dove; a reference to Christ's Baptism.

       Trefoil (from Latin trifolium, "three-leaved plant", French trèfle, Italian trifoglio, German Dreiblatt and Dreiblattbogen, Dutch klaver, "clover", same as clubs) is a graphic form composed of the outline of three overlapping rings used in architecture and Christian symbolism. The term is also applied to other symbols of three-fold shape.

       Trefoil is a term in Gothic architecture given to the ornamental
foliation or cusping introduced in the heads of window lights,  tracery,
 panellings, etc., in which the center takes the form of a three-lobed leaf
(formed from three partially overlapping circles). One of the earliest
examples is in the plate tracery at Winchester (1222–1235). The fourfold
 version of an architectural trefoil is a quatrefoil.

       A simple trefoil shape in itself can be symbolic of the Trinity,
 while a trefoil combined with an equilateral triangle was also
 a moderately common symbol of the Christian Trinity
during the late Middle Ages in some parts of Europe.

Scripture Reference for The Trinity Symbol With Dove:

• "But the Helper, the Holy Spirit, whom the Father will send in my name, he will teach you all things and bring to your remembrance all that I have said to you."John 14:26 (ESV)
• "Peace I leave with you; my peace I give you. I do not give to you as the world gives. Do not let your hearts be troubled and do not be afraid." John 14:27 (NIV)