The Trinity is a doctrine unique to Christianity. No other faith, religion, sect, or philosophy that advocates one God also proclaims that God is Three-in-One. This apparent paradox does not mean there are ‘three gods in one,' but that one God exists as three persons who are coequal, coinfinite, and coeternal, all possessing the same essential nature. God is one in essence, but three in persons.
The Trinity is not abstract theology, but a practical doctrine that you should comprehend. Your understanding of the plan God the Father has designed for you illuminates your destiny in time and eternity. Your understanding of the person and work of Jesus Christ illuminates your so-great salvation. Your understanding of the Holy Spirit affects your concept of living the Christian life. Only by perceiving the true biblical perspective of the Trinity can you come to love God, grow spiritually, and fulfill your very own spiritual life.