Man was created to bear the image of God and to reflect who He is and magnify His glory. We know that Adam was created with a body, soul and spirit. The body being a tabernacle that "houses" the soul and the soul being a vessel that contains the spirit. The soul can be understood as the essence of one's being, the transcendent self. The soul is eternal, our earthly bodies are mortal. Now, regarding the spirit. The Bible is clear that the Spirit is the breath of life. We are told that God breathed life into Adam:
"And the LORD God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul" (Genesis 2:7).
Man's body was formed from the dust of the earth, but his life came from the breath of God. Adam's soul was "quickened" or made alive, "became a living soul," by the breath of God -- the Holy Spirit. The triune nature of Adam reflects the image and being of our Triune God. The Holy Spirit, of course, is understood as spirit. God the Father is understood and revealed as the essence of God, the Great I AM; and Jesus, as we know from Scripture, is both the "brightness of His glory"and the "express image of His person" (Hebrews 1:3).
Both the Father and the Spirit are invisible, similar to our soul and spirit, but Jesus is God made "manifest in mortal flesh" (2 Corinthians 4:11) similar to our earthly bodies.