This work discusses the essential nature of ecclesiastical discipline centered around the indivisible Trinity, advocating for unwavering belief to maintain unity among nations. It critiques deviations from Catholic faith by the Greek emperors Michael and Basil, stressing the need to counter their heretical assertions regarding the Holy Spirit's procession. The author calls for a defender of the faith to articulate the relationship within the Trinity and its coeternity, while referencing Augustine's teachings on the inseparable nature of the Father, Son, and Holy Spirit. This theological discourse aims to uphold the integrity of the Church and the unity of belief.