Here is some motivation from Pr. McCain to read more Chemnitz:
For we can affirm with a good conscience that we have, after reading the Holy Scripture, applied ourselves and yet daily apply ourselves to the extent that the grace of the Lord permits to inquiry into and investigation of the consensus of the true and purer antiquity. For we assign to the writings of the fathers their proper and, indeed, honorable place which is due them, because they have clearly expounded many passages of Scripture, have defended the ancient dogmas of the church against new corruptions of heretics, and have done so on the basis of Scripture, have correctly explained many points of doctrine, have recorded many things concerning the history of the primitive church, and have usefully called attention to many other things. And we long for this, that in the life to come we may see what we believe and hope concerning the grace of God on account of His Son, the Redeemer, as members of the true catholic church; that we may see (I say) the Son of God Himself, the patriarchs, prophets, apostles, martyrs, and fathers, who held to the true foundation, and may enjoy intimate friendship with them to all eternity. Therefore we examine with considerable diligence the consensus of the true, learned, and purer antiquity, and we love and praise the testimonies of the fathers which agree with the Scripture.
— Martin Chemnitz, Examination of the Council of Trent, Part I, p. 256.