3 adjectives to describe triad

Further than this his knowledge did not extend; although he knows the Holy Ghost and identifies him with Jesus, none the less his primitive reasoning, under the influence of many old beliefs, explained the mysterious triad of the Trinity as husband, wife, and son.

With the lightning ends the development of the negative triad, and the evolution of the three higher forms then begins; Boehme calls them light or love, sound and substance; they are of the spirit, and in them contraction, expansion, and rotation are repeated in a new sense.

The three human foster-children who have been taken nearest into Nature's bosom, perhaps,an odd triad, surely, for the whimsical nursing mother to select,are Wordsworth, Bettine Brentano, and Thoreau.

3 adjectives to describe  triad