God and His Creation

We firmly believe and unreservedly confess that there is only one true God, eternal and immeasurable, almighty, unchangeable, incomprehensible and ineffable, Father, Son and Holy Spirit, three persons but one absolutely simple essence, substance or nature. The Father is from none, the Son from the Father alone, and the Holy Spirit from both equally, eternally without beginning or end; the Father generating, the Son being born, and the holy Spirit proceeding; consubstantial and coequal, co-omnipotent and coeternal; one principle of all things, creator of all things invisible and visible, spiritual and material; who by his almighty power at the beginning of time created from nothing both spiritual and material creatures, that is to say angelic and earthly, and then created human beings composed as it were of both spirit and body in common. (Profession of Faith, Fourth Lateran Council, 1215)