Let this be sufficient concerning the first part of the common Christian doctrine, both for teaching and urging what is necessary. In conclusion, however, we must repeat the text which belongs here, of which we have treated already in the First Commandment, in order that we may learn what pains God requires to the end we may learn to inculcate and practice the Ten Commandments: For I the Lord, thy God, am a jealous God, visiting the iniquity of the fathers upon the children unto the third and fourth generation of them that hate Me, and showing mercy unto thousands of them that love Me and keep My commandments. Although (as we have heard above) this appendix was primarily attached to the First Commandment, it was nevertheless [we cannot deny that it was] laid down for the sake of all the commandments, as all of them are to be referred and directed to it. Therefore I have said that this, too, should be presented to and inculcated upon the young, that they may learn and remember it, in order to see what is to urge and compel us to keep these Ten Commandments. And it is to be regarded as though this part were specially added to each, so that it inheres in, and pervades, them all. Now, there is comprehended in these words (as said before) both an angry word of threatening and a friendly promise to terrify and warn us, and, moreover to induce and encourage us to receive and highly esteem His Word as a matter of divine earnestness, because He Himself declares how much He is concerned about it, and how rigidly He will enforce it, namely, that He will horribly and terribly punish all who despise and transgress His commandments; and again, how richly He will reward, bless, and do all good to those who hold them in high esteem, and gladly do and live according to them. Thus He demands that all our works proceed from a heart which fears and regards God alone, and from such fear avoids everything that is contrary to His will, lest it should move Him to wrath; and, on the other hand, also trusts in Him alone, and from love to Him does all He wishes, because he speaks to us as friendly as a father, and offers us all grace and every good.