Just as God's will is creation and is called "the world," so his intention is the salvation of men, and it is called "the Church." 155
Catechism number 762
The remote preparation for this gathering together of the People of God begins when he calls Abraham and promises that he will become the father of a great people.157 Its immediate preparation begins with Israel's election as the People of God. By this election, Israel is to be the sign of the future gathering of All nations.158 But the prophets accuse Israel of breaking the covenant and behaving like a prostitute. They announce a new and eternal covenant. "Christ instituted this New Covenant."159
The Church - instituted by Christ Jesus