God promiseth seed to Abram. His faith, sacrifice and vision.
“Abram believed God, and it was reputed to him unto justice.” (Genesis 15:6)
Abraham’s faith was righteous in that he believed with great promptness of spirit.
“And how did Abraham’s progeny spread? Only through the inheritance he transmitted in virtue of faith. On this basis the faithful are assimilated to heaven, made comparable to the angels, equal to the stars. This is why he said, ‘So will your descendants be. And Abraham,’ the text says, ‘believed in God.’ What exactly did he believe? Prefiguratively he believed that Christ through the incarnation would become his heir. In order that you may know that this was what he believed, the Lord says, ‘Abraham saw my day and rejoiced.’ For this reason ‘he reckoned it to him as righteousness,’ because he did not seek the rational explanation but believed with great promptness of spirit.” (4) -St. Ambrose of Milan
God is generous and blesses those who are faithful to him.
“Because Abraham did not seek recompense from man, he received it from God, as we read in Scripture: “After these words the Lord spoke to Abraham in a vision saying, Fear not, Abraham, I will protect you. Your reward will be exceedingly great.” The Lord is not slow to reward. He is eager to promise, and he gives in abundance, lest any delay cause weak souls to repent of having despised visible things. He pays back, so to speak, at high interest, rewarding with great abundance the one who has not been seduced by the things of this world that were offered to him.” (4) -St. Ambrose
The Catechism of the Catholic Church states:
2756 Filial trust is put to the test when we feel that our prayer is not always heard. The Gospel invites us to ask ourselves about the conformity of our prayer to the desire of the Spirit.
Women's Prayer Group In Christ 