Peter says, II. Peter i: "Wherefore the rather, brethren, give diligence through good works to make your calling and election sure."XIX. The First Commandment forbids us to have other gods, and thereby commands that we have a God, the true God, by a firm faith, trust, confidence, hope and love, which are the only works whereby a man can have, honor and keep a God; for by no other work can one find or lose God except by faith or unbelief, by trusting or doubting; of the other works none reaches quite to God. So also in the Second Commandment we are forbidden to use His Name in vain. Yet this is not to be enough, but we are thereby also commanded to honor, call upon, glorify, preach and praise His Name. And indeed it is impossible that God's Name should not be dishonored where it is not rightly honored. For although it be honored with the lips, bending of the knees, kissing and other postures, if this is not done in the heart by faith, in confident trust in God's grace, it is nothing else than an evidence and badge of hypocrisy.
See now, how many kinds of good works a man can do under this Commandment at all times and never be without the good works of this Commandment, if he will; so that he truly need not make a long pilgrimage or seek holy places. For, tell me, what moment can pass in which we do not without ceasing receive God's blessings, or, on the other hand, suffer adversity? But what else are God's blessings and adversities than a constant urging and stirring up to praise, honor, and bless God, and to call upon His Name? Now if you had nothing else at all to do, would you not have enough to do with this Commandment alone, that you without ceasing bless, sing, praise and honor God's Name? And for what other purpose have tongue, voice, language and mouth been created? As Psalm li. says: "Lord, open Thou my lips, and my mouth shall show forth Thy praise." Again: "My tongue shall sing aloud of Thy mercy."What work is there in heaven except that of this Second Commandment? As it is written in Psalm Ixxxiv: "Blessed are they that dwell in Thy house: they will be for ever praising Thee."So also David says in Psalm xxxiv: "God's praise shall be continually in my mouth." And St. Paul, I. Corinthians x:
"Whether therefore ye eat or drink, or whatsoever ye do, do all to the glory of God." Also Colossians iii: "Whatsoever ye do in word or deed, do all in the Name of the Lord Jesus, giving thanks to God and the Father." If we were to observe this work, we would have a heaven here on earth and always have enough to do, as have the saints in heaven.
XX. On this is based the wonderful and righteous judgment of God, that at times a poor man, in whom no one can see many great works, in the privacy of his home joyfully praises God when he fares well, or with entire confidence calls upon Him when he fares ill, and thereby does a greater and more acceptable work than another, who fasts much, prays much, endows churches, makes pilgrimages, and burdens himself with great deeds in this place and in that. Such a fool opens wide his mouth, looks for great works to do, and is so blinded that he does not at all notice this greatest work, and praising God is in his eyes a very small matter compared with the great idea he has formed of the works of his own devising, in which he perhaps praises himself more than God, or takes more pleasure in them than he does in God; and thus with his good works he storms against the Second Commandment and its works. Of all this we have an illustration in the case of the Pharisee and the Publican in the Gospel. For the sinner calls upon God in his sins, and praises Him, and so has hit upon the two highest Commandments, faith and God's honor. The hypocrite misses both and struts about with other good works by which he praises himself and not God, and puts his trust in himself more than in God. Therefore he is justly rejected and the other chosen.
The reason of all this is that the higher and better the works are, the less show they make; and that every one thinks they are easy, because it is evident that no one pretends to praise God's Name and honor so much as the very men who never do it and with their show of doing it, while the heart is without faith, cause the precious work to be despised. So that the Apostle St. Paul dare say boldly, Romans ii, that they blaspheme God's Name who make their boast of God's Law. For to name the Name of God and to write His honor on paper and on the walls is an easy matter;but genuinely to praise and bless Him in His good deeds and confidently to call upon Him in all adversities, these are truly the most rare, highest works, next to faith, so that if we were to see how few of them there are in Christendom, we might despair for very sorrow. And yet there is a constant increase of high, pretty, shining works of men's devising, or of works which look like these true works, but at bottom are all without faith and without faithfulness; in short, there is nothing good back of them. Thus also Isaiah xlviii. rebukes the people of Israel:
"Hear ye this, ye which are called by the name of Israel, which swear by the Name of the Lord, and make mention of the God of Israel neither in truth, nor in righteousness"; that is, they did it not in the true faith and confidence, which is the real truth and righteousness, but trusted in themselves, their works and powers, and yet called upon God's Name and praised Him, two things which do not fit together.
XXI. The first work of this Commandment then is, to praise God in all His benefits, which are innumerable, so that such praise and thanksgiving ought also of right never to cease or end. For who can praise Him perfectly for the gift of natural life, not to mention all other temporal and eternal blessings? And so through this one part of the Commandment man is overwhelmed with good and precious works; if he do these in true faith, he has indeed not lived in vain. And in this matter none sin so much as the most resplendent saints, who are pleased with themselves and like to praise themselves or to hear themselves praised, honored and glorified before men.