Catechesis Pro Advltioribvs Scripta, De his potissimum capitibus

Adam, the parent of us all, with Noah, and most significantly of all with Abraham, and his whole seed, that is, with all faithful men of all ages and nations. From whence it is most manifest that we all are covenant-members of God. And lest anyone doubt, the word of God is clear: "I will be your God, and the God of your seed after you in everlasting generations." Now, Paul the apostle expressly pronounces that the faithful are the true seed of Abraham, as is read in Romans chapter 4 and Galatians chapter 3.

The conditions of the divine covenant.

I. Tell me, what are the conditions or chapters of that covenant of God, struck with men?
R. Two, most importantly. The one explains what kind of God he wishes to show himself to be to us, or what we should expect from him, or promise to ourselves concerning him. The other contains what he, in turn, requires from us, and what our duty is.

I. Explain, therefore, to me, what kind of God he wishes to show himself to be to men?
R. He wishes not only to be a common or universal God, but as it were the peculiar God of each one of us: that is, he wishes to be our fullness and all-sufficiency, in whom, evidently, we may have all the most excellent and abundant goods, both of soul and body, and of the present and future [life]: which we ought to expect and even ask for from him alone, and neither expect nor ask for from foreign gods.