[MarkBsnr]

The Catholic Church is the true Israel, because in her the covenants with Israel of old are fulfilled, and the new one exists. However, the Church is neither a replacement for or heir of the geopolitical and historical entity known as Israel. The question which covenants of the Old Testament refer to the Church and which — to the country of Israel and which — to the Jewish people does not have a simple answer, and some aspects of it are open to debate.

Very good. We are not replacements for Israel, in spite of the nuts and crazies and lunatics that accuse us of claiming that. We have been offered the New Covenant and for that we are eternally grateful. But we do not supplant Israel and we are adopted sons, not the original sons.

[smvoice]

The Catholic Church is the true Israel, because in her the covenants with Israel of old are fulfilled, and the new one exists.

I've been curious about this statement, annalex. I'm not sure what you mean by this. Please explain further.

[annalex]

we are adopted sons

St. Paul speaks in stronger terms, speaking of "grafting" replacing the old branches broken off. Further, the genetic Israel itself is broken off and in need of re-grafting:

[16] For if the firstfruit be holy, so is the lump also: and if the root be holy, so are the branches. [17] And if some of the branches be broken, and thou, being a wild olive, art ingrafted in them, and art made partaker of the root, and of the fatness of the olive tree, [18] Boast not against the branches. But if thou boast, thou bearest not the root, but the root thee. [19] Thou wilt say then: The branches were broken off, that I might be grafted in. [20] Well: because of unbelief they were broken off. But thou standest by faith: be not highminded, but fear.

[21] For if God hath not spared the natural branches, fear lest perhaps he also spare not thee. [22] See then the goodness and the severity of God: towards them indeed that are fallen, the severity; but towards thee, the goodness of God, if thou abide in goodness, otherwise thou also shalt be cut off. [23] And they also, if they abide not still in unbelief, shall be grafted in: for God is able to graft them in again. [24] For if thou wert cut out of the wild olive tree, which is natural to thee; and, contrary to nature, were grafted into the good olive tree; how much more shall they that are the natural branches, be grafted into their own olive tree?

(Romans 11)

When a branch is broken off and another grafted in, that is replacement, even though every connotation that the Replacement theology has accrued may not be there. To wit, the genetical Israel is prophesied to be regrafted in a more natural way.