Jonathan Edwards, one of America’s greatest thinkers and theologians in “An Essay on the Trinity” from “Treatise on Grace and Other Posthumously Published Writings” (Cambridge UK 1971) provides a remarkable description of how the three persons of the trinity relate to each other.
Summary: The Father is God existing in the primal, unoriginated, most absolute manner. God the Son stands forth eternally as a work of God’s THOUGHT (thinking). And God the Holy Spirit proceeds from the Father and the Son as an act of their JOY (feeling). They are co-eternal and equally divine.
Also John Piper in his book “Think” says it well: God’s existence as a Trinity of Persons is the foundation of human nature as head and heart, thinking and feeling, knowing and loving.
God’s “thinking” and “feeling” are deeply part of His Trinitarian being.
God made the world so He can communicate, and we his creatures receive, His glory; and that it might be received by both the mind and heart.
If we are to live as people made in the image of God to glorify Him fully, we must engage our mind in knowing Him truly and our hearts in loving Him duly.
The mind serves to know the truth that fuels the fire of the heart.