We hallow the Lord's Day not merely by listening to God's Word, but also by learning it and honoring it...

It is not only the people who greatly misuse and desecrate the holy day who sin against this commandment (those who neglect to hear God's Word because of their greed or frivolity or lie in taverns and are dead drunk like swine).  But even that other crowd sins.  They listen to God's Word like it was any other trifle and only come to preaching because of custom.  They go away again, and at the end of the year they know as little of God's Word as at the beginning.  Up to this point the opinion prevailed that you had properly hallowed Sunday when you had heard a Mass or the Gospel read.  But no one cared for God's Word, and no one taught it.  Now that we have God's Word, we fail to correct the abuse  We allow ourselves to be preached to and admonished, but we do not listen seriously and carefully.

Know, therefore, that you must be concerned not only about hearing, but also about learning and retaining God's Word in memory.  Do not think that this is optional for you or of no great importance. Think that it is God's commandment, who will require an account from you about how you have heard, learned and honored His Word.
~BOC, LC, I, 96-98

The Holy Spirit carries out both offices together: He slays and makes alive...

The Law indeed says it is God's will and command that we should walk in a new life.  But it does not give the power and ability to begin and to do it.  The Holy Spirit renews the heart.  He is given and received, not through the Law, but through the preaching of the Gospel.  Thereafter, the Holy Spirit uses the Law in order to teach the regenerate from it and to point out and show them in the Ten Commandments what is the "will of God, what is good and acceptable and perfect" (Romans 12:2) in what "good works, which God prepared beforehand, that we should walk" (Ephesians 2:10).  He encourages them  to this.  When they are idle, negligent and rebellious in this mater because of the flesh, He rebukes them through the Law.  So the Spirit carries out both offices together: He slays and makes alive.  He leads into hell and brings up again.  For His office is not only to comfort, but also to rebuke.  For it is written, "when [the Holy Spirit] comes, He will convict the world [which includes also the old Adam] concerning sin and righteousness and judgment" (John 16:8).  Sin is everything that is contrary to God's Law.  St. Paul says, "All Scripture is breathed out by God and profitable for teaching, for reproof" (2 Timothy 3:16), and to rebuke is the Law's special office.  Therefore, as often as believers stumble, they are rebuked by the Holy Spirit from the Law.  By the same Spirit they are raised up and comforted again with the preaching of the Holy Gospel.
~BOC, FSD, VI, 11-14

Use God's name in the service of truth...

Besides this you must also  know how to use God's name rightly.  For when He says, "You shall not take the name of the Lord, your God, in vain," He wants us to understand at the same time that His name is to be used properly.  For His name has been revealed and given to us so that it may be of constant use and profit. So it is natural to conclude that since this commandment forbids using the holy name for falsehood or wickedness, we are, on the other hand, commanded to use His name for truth and for all good, like when someone takes an oath truthfully when it is needed and demanded.  This commandment also applies to right teaching and to calling on His name in trouble or praising and thanking Him in prosperity, and so on.  All of this is summed up and commanded in Psalm 50:15, "Call upon Me in the day of trouble; I will deliver you, and you shall glorify Me." For all this is bringing God's name into the service of truth and using it in a blessed way.  In this way His name is hallowed, as we pray in the Lord's Prayer.
~BOC, LC, I, 63-64

God is as an eternal fountain that gushes forth abundantly nothing but what is good...

We are to trust in God alone and look to Him and expect from Him nothing but good, as from one who gives us body, life, food, drink, nourishment, health, protection, peace, and all necessaries of both temporal and eternal things.  He also preserves us from misfortune.  And if any evil befall us, He deilvers and rescues us.  So it is God alone (as had been said well enough) from whom we receive all good and by whom we are delivered from all evil. ...It is as though He were an eternal fountain that gushes forth abundantly nothing but what is good.  And from that fountain flows forth all that is and is called good.

Even though we experience much good from other people, whatever we receive by God's command or arrangement is all received from God.  For our parents and all rulers and everyone else, with respect to his neighbor, have received from God the command that they should du us all kinds of good.  So we receive these blessings not from them, but through them, from God.  For creatures are only the hands, channels, and means by which God gives all things.  So He gives to the mother breasts and milk to offer to her child, and He gives corn and all kinds of produce from the earth for nourishment.  None of these blessings could be produce by any creature of itself.
~BOC, LC, I, 24-26

Without faith we can do no good for nothing in man is harmless...

Therefore, it is easy to see that this doctrine is not to be accused of banning good works.  Instead, it is to be commended all the more because it shows how we are enabled to do good works.  For without faith, human nature cannot, in any way, do the works of the First or Second Commandment.  Without faith, human nature cannot call upon God, nor expect anything from Him, nor bear the cross.  Instead human nature seeks and trusts in human help.  So when there is no faith and trust in God, all kinds of lusts and human intentions rule in the heart.  This is why Christ says, "Apart from me you can do nothing" (John 15:5). That is why the Church sings: "Lacking Your divine favor, there is nothing in man.  Nothing in him is harmless."
~BOC, AC, XX, 35-40

The true honor of God's name...

For that is the true honor of His name, to look to it and call upon it for all consolation.  Then--as we have learned in the First Commandment--the heart by faith gives God the honor due Him first.  Afterward, the lips give Him honor by confession.  This is also a blessed and useful habit and very effective against the devil.  He is ever around us and lies in wait to bring us into sin and shame, disaster and trouble. But he hates to heard God's name and cannot remain long where it is spoken and called upon from the heart.
~BOC, LC, I, 70-71

Human nature cannot fear and trust in God...

All of these things are the reason why we made mention of concupiscense in our description of original sin, and why we deny to human nature the ability to fear and trust in God.  We wanted to show that original sin contains these diseases: ignorance of God, not having fear and trust in God, the inability to love God. These are the chief faults of human nature because they conflict with the First Table of the Ten Commandments.
~BOC, AP, II(I), 14

It is far higher to honor than to love...

He does not simply command us to love our parents, but to honor them.  Regarding our brothers, sisters, and neighbors in general, He commands nothing more than that we love them.  In this way He separates and distinguishes father and mother from all persons upon earth and places them at His side.  For it is a far higher thing to honor someone than to love someone, because honor includes not only love, but also modesty, humility, and submission to a majesty hidden in them.
~BOC, LC, I, 105-106

All human holiness is just stench and filth beside the work of God's commandments...

Therefore, it is God's ultimate purpose that we let harm come to no one, but show him all good and love...But know now that the works of this commandment [you shall not murder] are the true, holy, and godly works. God rejoices in them with all the angels. In comparison with these works, all human holiness is just stench and filth. And besides, human holiness deserves nothing but wrath and damnation.
~BOC, LC, I, 193, 198

The Law is not kept without Christ...

Therefore, in all our praising of works and in the preaching of the Law, let us keep this rule: The Law is not kept without Christ.  As He Himself has said, "Apart from Me you can do nothing" (John 15:5).  Likewise, "Without faith it is impossible to please [God]" (Hebrews 11:6).  For it is very certain that the doctrine of the Law is not intended to remove the Gospel and to remove Christ as the Atoning Sacrifice.  Let the Pharisees, our adversaries, be cursed.  They interpret the Law to assign Christ's glory to works.  (In other words, they say works are an atoning sacrifice, that they merit the forgiveness of sins.)  Works are always rightly praised in this way: they are pleasing because of faith.  For works do not please without Christ as the Atoning Sacrifice. "Through Him we have also obtained access [to God]" (Romans 5:2), not by works without Christ as Mediator.  Therefore, when it is said in Matthew 19:17, "If you would enter life, keep the commandments," we must believe that without Christ the commandments are not kept and cannot please.
~BOC, AP, V(III), 148-149

Clothing your neighbor's weaknesses in your own honor...

Let everyone use his tongue and make it serve for the best of everyone else, to cover up his neighbor's sins and infirmities, excuse them, conceal and garnish them with his own reputation...So also among ourselves should we clothe whatever blemishes and infirmities we find in our neighbor and serve and help him to promote his honor to the best of our ability.
~BOC, LC, I, 285, 287