The ordinary rule of scripture is in the calling wherein a man is called he should therein abide with God. The blessed Lord was a carpenter till called to His own fuller service, and Paul was a tent-maker, and at times supplied his own wants. In a certain sense all things are lawful for me. There are many where the motive is everything Christianity does not change the order of the world, even where sin has given rise to it. I could not systematically sell gin. If gin was of use I could give it to the sick, unless it were a stumbling-block to others. The disciples were taken out of the world to represent God in it, walking in His ways, not its ways, deriving their life and all their ways from Him, to live as Christ did. The world is an immense system built up by Satan around fallen man to keep man insensible to his ruin. (Gen. 4:20-2220And Adah bare Jabal: he was the father of such as dwell in tents, and of such as have cattle. 21And his brother's name was Jubal: he was the father of all such as handle the harp and organ. 22And Zillah, she also bare Tubal-cain, an instructor of every artificer in brass and iron: and the sister of Tubal-cain was Naamah. (Genesis 4:20‑22).) The Lord does not pray we should be taken out of it, but kept from the evil.
Your friend is solemnized by the voluntary! Is he content to be unfit for worship till he hears the organ? This is a poor plea and putting nature instead of grace, which has even boldness to enter into the holiest. This lowers and falsifies the whole nature of our relationship with God and Judaises it. As to conversion, wherever Christ is presented souls can be converted, but this is not worship but preaching. Christians becoming more and more worldly is no reason for our going with it, but the contrary. No doubt people may be attracted, but so they are to gin palaces. The Puseyites recommend it in church on that ground, so they are largely as popery. God may rise above all mistakes in grace, but it is one of the strongest marks that worldly attraction has taken the place of grace and Christ. Did you ever find Christ or Paul have music or a band to draw people? It covers the whole character of Christianity. The earthly promises to the Jews do not directly apply to us, but in general God's faithfulness and loving care is, "I will never leave thee nor forsake thee," is used in the New Testament as well as in the Old. Read the latter as written for us for our instruction on whom the ends of the world are come, that we through patience and comfort of the scriptures might have hope. 1 Peter is, after redemption stated, a treatise on the ways of God, now using the Old Testament for it. The Old Testament scriptures cannot give us an accomplished redemption nor glory into which Christ was not yet entered, but they are able to make us wise unto salvation through faith which is in Christ Jesus. You have to discern what is earthly Jewish promises. It is important to do so; but what is in God, faithfulness, grace, love, condescending care of us is always true. We get it perhaps more clearly applied in the New Testament. Thus, "seek ye first... and all these things shall be added unto you." I should be sorry to reduce Christianity to mere Jewish promises, but what is in God is always true. 2 Thess. 2 shows that where people would not receive the love of the truth that they may be saved, they are, when Christ rises up, given to darkness.
What I said as to the transfiguration was that those three men were going to be pillars (see Gal. 2) and that this was to clear and strengthen their faith. The tendency of having a companion with less faith is to weaken ours, still faith may overcome this.
Your affectionate brother in Christ.
1881.