Mennonites believe in the Trinity of God, Jesus and Holy Spirit. These are three aspects of the Divine all in one.
The Confession of Faith in a Mennonite Perspective says, “We worship the one holy and living God who is Father, Son and Holy Spirit eternally.”
To confess that God is Father, Son, and Holy Spirit is to confess that the Son and the Holy Spirit are fully divine. It is also to confess that God is one and that God’s oneness is the unity of the Father, Son, and Holy Spirit. Confessing God as Father, Son, and Holy Spirit emphasizes the shared work of creation, salvation and the final consummation.