Liturgical Colour : White
Romans 4 : 13, 16-18, 22
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 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 father of many nations, as he had been told : See how many will be your descendants.
This was taken into account for him to attain righteousness.