Theme 100 : Certainty about God

We are, by nature and vocation, religious beings. When we listen to the message of the creation and to the voice of our conscience, we can arrive at certainty about the existence of God, the cause and the end of everything. The Church teaches that the one true God, our Creator and Lord, can be known with certainty from HIS works, by the natural light of human reason. We really can name God, starting from the manifold perfections of HIS creatures, which are likenesses of the infinitely perfect God, even if our limited language cannot exhaust the mystery. The creatures do not exist without the Creator. The love of Christ urges the believers to bring the light of the Living God to those who do not know HIM or who reject HIM. 
                                 (Ref. CCC 44-49)
Prayer :
O Living God, my existence is real only because YOU, my Creator, are Real. Coming from YOU and going toward YOU, I live a fully human life only if I freely live by my bond with YOU. I am made to live in communion with YOU in whom I find true happiness. When I am completely united to YOU, my life will be complete.