PROVERBS3:5-6NKJV. "Trust in the LORD with all your heart, And lean not on your own understanding; In all your ways acknowledge Him, And He shall direct your paths."

COLOSSIANS2:8AMP. "See to it that no one takes you captive through philosophy and empty deception [psuedo-intellectual babble], according to the tradition [and musings] of mere men, following the elementary principles of this world, rather than following [the truth--the teachings of] Christ." [Footnote: Perhaps a reference to ancient philosophies based on the belief that only the material world is real]

HOW ARE CATHOLICISM, PROTESTANTISM, AND THE TRINITY RELATED?

Catholicism, Protestantism, and the Trinity are related concepts in Christianity, but they have some differences and similarities.

Catholicism is the largest branch of Christianity, with about 1.3 billion adherents worldwide. The Trinity is a central doctrine in both Catholicism and Protestantism. It refers to the three persons of God: the Father, the Son, and the Holy Spirit. The Trinity is often depicted in art as three figures, but it is important to remember that the three persons are one God.It is based on the teachings of Jesus Christ and the apostolic tradition, as interpreted by the Pope and the bishops in communion with him. Catholicism affirms the doctrine of the Trinity, which states that there is one God in three persons: the Father, the Son, and the Holy Spirit. The Trinity is a mystery of faith that cannot be fully understood by human reason, but can be known by revelation and worship [which now is the time--refer to the Tripartiteness of God in another blog]. Catholicism also holds that the Son of God became incarnate in Jesus Christ, who is true God and true man, and that the Holy Spirit is the giver of life and the sanctifier of the church. 

https://www.catholiceducation.org/en/culture/catholic-contributions/catholic-doctrine-on-the-holy-trinity.html

Protestantism is a term that refers to the various Christian denominations that emerged from the Reformation in the 16th century, when some Christians broke away from the Catholic Church over issues of doctrine, authority, and practice. Protestantism has many branches, such as Lutheranism, Anglicanism, Calvinism, Anabaptism, and Evangelicalism, each with its own beliefs and traditions. However, most Protestants share some common principles, such as the authority of the Bible as the sole rule of faith, the justification by faith alone, and the priesthood of all believers. Protestantism also affirms the doctrine of the Trinity, although some groups, such as Unitarians and Jehovah's Witnesses, reject it. Protestantism also acknowledges that Jesus Christ is the Son of God and the Savior of the world, and that the Holy Spirit is the third person of the Godhead and the guide of the church.https://www.diffen.com/difference/Catholic_vs_Protestanthttps://www.9marks.org/article/two-views-on-church-authority-protestant-vs-roman-catholic/

The Trinity is the central doctrine of Christianity, which expresses the belief that God is one being in three persons: the Father, the Son, and the Holy Spirit. The Trinity is not explicitly stated in the Bible, but it is derived from the biblical testimony of God's self-revelation in history and in Jesus Christ. The Trinity is also supported by the early creeds and councils of the church, such as the Nicene Creed and the Chalcedonian Definition, which defined and defended the doctrine against various heresies and misunderstandings. The Trinity is not a contradiction, but a paradox, that reveals the richness and depth of God's nature and character. The Trinity is also a model of love, communion, and mission, that invites Christians to participate in God's life and work.

http://christianityinview.com/comparison.htmlhttps://voice.dts.edu/article/7-key-differences-between-protestant-and-catholic-doctrine-del-rosario-mikel/