The One True God - Pack Of 50 Tracts The first Christians, like the Jews before them, were fiercely monotheistic, willing to die horrible martyrs’ deaths in the Coliseum—being slain by gladiators, devoured by wild animals, crucified, or tied to a stake and turned into human torches—rather than concede the existence of any other gods. The first Christians took God at his word and were willing to stake even their lives on the certainty that there is only one God.
"Who does not see that knowledge precedes faith? Nobody believes unless he knows what to believe."
~ Augustine of Hippo, convert, bishop, theologian, Father and Doctor of the Church, Saint; noting that the assent of faith is a rational act; before it can be made, it must be known for certain that there is a God, that He has spoken, and that what He has spoken is known. (see "Science and the Church")