Liturgical Colour : Green or Red (Martyrs) or White (Priests or Saturday Mass of Our Lady)
Romans 4 : 13, 16-18
If God promised Abraham, or rather his descendants, that the world would belong to him, this was not because of his obeying the Law, but because he was just, and a friend of God, through faith.
For that reason, faith is the way, and all is given, by grace; and the promises of Abraham are fulfilled for all his descendants, not only for his children according to the Law, but, also, for all the others, who have believed. Abraham is the father of all of us, as it is written : I will make you the father of many nations. He is our father, in the eyes of Him, Who gives life to the dead, and calls into existence, what does not yet exist, for this is the God in Whom he believed.
Abraham believed, and hoped against all expectation, thus, becoming the father of many nations, as he had been told : See how many will be your descendants.