4 

4:9 God hath set forth us last, as appointed to death - Alluding to the Roman custom of bringing forth thosepersons last on the stage, either to fight with each other, or with wild beasts, who were devoted to death; so that, if they escaped one day, they were brought out again and again, till they were killed.

4:10 We are fools, in the account of the world, for Christ's sake, but ye are wise in Christ - Though ye are Christians, ye think yourselves wise; and ye have found means to make the world think you so too. We are weak - In presence, in infirmities, in sufferings. But ye are strong - In just opposite circumstances.

4:11 And are naked - Who can imagine a more glorious triumph of the truth, than that which is gained in these circumstances when St. Paul, with an impediment in his speech, and a person rather contemptible than graceful, appeared in a mean, perhaps tattered, dress before persons of the highest distinction, and yet commanded such attention.and made such deep impressions upon them!

4:12 We bless - suffer it - intreat - We do not return revilings, persecution, defamation; nothing but blessing.

4:13 We are made as the filth of the world, and offscouring of all things - Such were those poor wretches among the heathens, who were taken from the dregs of the people, to be offered as expiatory sacrifices to the infernal gods. They were loaded with curses, affronts, and injuries, all the way they went to the altars; and when the ashes of those unhappy men were thrown into the sea, these very names were given them in the ceremony.

4:14 I do not write these things to shame you, but as my beloved children I warn you - It is with admirable prudence and sweetness the apostle adds this, to prevent any unkind construction of his words.

4:15 I have begotten you - This excludes not only Apollos, his successor, but also Silas and Timothy, his companions; and the relation between a spiritual father and his children brings with it an inexpressible nearness and affection.

4:16 Be ye followers of me - In that spirit and behaviour which I have so largely declared.

17 

17:14  Mar 9:14; Luk 11:37.

17:15 He is lunatic - This word might with great propriety he used, though the case was mostly preternatural; as the evil spirit would undoubtedly take advantage of the influence which the changes of the moon have on the brain and nerves.

17:17 O unbelieving and perverse generation - Our Lord speaks principally this to his disciples. How long shall I be with you? - Before you steadfastly believe?

17:20 Because of your unbelief - Because in this particular they had not faith. If ye have faith as a grain of mustard seed - That is, the least measure of it. But it is certain, the faith which is here spoken of does not always imply saving faith. Many have had it who thereby cast out devils, and yet will at last have their portion with them. It is only a supernatural persuasion given a man, that God will work thus by him at that hour. Now, though I have all this faith so as to remove mountains, yet if I have not the faith which worketh by love, I am nothing. To remove mountains was a proverbial phrase among the Jews, andis still retained in their writings, to express a thing which is very difficult, and to appearance impossible. Mat 21:21; Luk 17:6.

17:21 This kind of devils - goeth not out but by prayer and fasting - What a testimony is here of the efficacy of fasting, when addedto fervent prayer! Some kinds of devils the apostles had cast out before this, without fasting.

17:22  Mar 9:30; Luk 9:44.