The following is my translation of the notes and useful applications for the Holy Gospel for the Twenty-First Sunday after Trinity, John 4:47–54, as they are found in Das Weimarische Bibelwerk (1877). Square brackets indicate my own notes and additions. For the useful applications, I recommend the reader see this very helpful article by Dr. Benjamin T. G. Mayes.

II. How Jesus was received in Nazareth and in other places, and also how the royal official’s son was freed from the fever. (v. 43–54)
Annotated Text
47. And there was a royal official (a distinguished servant in the house of Herod the tetrarch, who nevertheless was considered a king by the common man and thus was called a king, Matthew 14:1, 9; Mark 6:14), whose son lay sick in Capernaum. This one heard that Jesus came (He had learned that Jesus had come) from Judea in Galilee, and he went to Him (to Cana, about five miles’ way), and he asked Him that He come down (go with him to Capernaum) and help his son, for he was sick unto death (therefore, he also supposed that Christ would have to be present himself for so dangerous an illness, and that he could not perform this work of healing if he were absent, much less raise him from the dead if he should die).
48. And Jesus said to him: * “If you do not see signs and wonders, ** then you will not believe (“You Jews believe no more than you see. If I go with you, you suppose that I could help your son; but what kind of faith is that?” To believe rightly means not to doubt at all about that which one does not see, Hebrews 11:1, and to ground oneself in the omnipotence and goodness of God insomuch that he can and will help, even above and against all sense and reason).”
* John 2:18; 1 Corinthians 1:22
** behold presently with your own eyes. The answer is aimed at the request to come down in v. 47 and agrees with Matthew 9:18.
49. The royal official said (further, in the weakness of his faith) to Him, “Lord, come down, before my child dies (otherwise, Your presence will be in vain).”
50. Jesus said to him, “Go (at this My Word, to which you shall attach firm faith), * your son (has not died as you think, but) lives (through the divine power of this My Word, and when you come home, you will find him alive and well).” The man believed the Word that Jesus spoke to him, and he went (in certain confidence that the Lord’s Word would come to pass; therefore, he also did not hurry home all at once, to which he could have come that same evening if he had wanted, but rather remained overnight on the way).
* 1 Kings 17:23
51. And while he was going (further, on the next day), his servants met him, proclaimed it to him and said, “Your son lives (and is completely alive, healthy, and strong).”
52. Then he investigated from them the hour in which it had become better with him. And they said to him, “Yesterday, around the seventh hour (according to our time, around 1 PM in the afternoon) the fever left him.”
53. Then the Father realized (and heard precisely) that it was (exactly) around the hour in which Jesus had said to him, “Your son lives (v. 50).” And he (as now he had been fully convinced of the divine miraculous power of Christ) believed along with his entire household (his wife, children, and household servants were brought through to true faith in Christ. And some hold that this royal official’s wife was Joanna, who is mentioned in Luke 8:3, and that she is called the wife of Chuza, the steward of Herod, who followed the Lord and ministered to Him from her own possessions).
(Acts 16:32, 18:8)
54. This is now the second sign that Jesus did when He came from Judea into Galilee. (The first is described in John 2:7ff.)
Useful Applications
II. DOCTRINE: What faith or heartfelt confidence in Christ’s Word and promise has for power and might is testified by the royal official (v. 50–53). DOCTRINE: But how the Lord Jesus often uses many wondrous preparations and arrangements to awaken and to strengthen faith is seen from both stories (v. 16–54).