6  The glory of the Lord, Isa 6:1-4.
Isaiah is terrified, Isa 6:5.
Is confirmed for his message, Isa 6:6-8.
The people's obstinacy unto desolation, Isa 6:9-12.
A remnant shall be saved, Isa 6:13.

6:1 I saw - In a vision. The Lord - The Divine Majesty as he subsisteth in three persons. His train - His royal and judicial robe; for he is represented as a judge.

6:2 Stood - As ministers attending upon their Lord. Seraphim - An order of holy angels, thus called from fire and burning, which this word properly signifies; to represent either their nature, which is bright and glorious, subtile, and pure; or their property, of fervent zeal for God's service and glory. Covered - Out of profound reverence.

6:3 Cried - Singing in consort. Holy - This is repeated thrice, to intimate the Trinity of persons united in the Divine essence. Glory - Of the effects and demonstrations of his glorious holiness, as well as of his power, wisdom, and goodness.

6:4 The posts - Together with the door itself. Such violent motions were commonly tokens of God's anger. Smoak - Which elsewhere is a token of God's presence and acceptance, but here of his anger.

6:5 l am - I am a great sinner, as many other ways, so particularly by my lips. I am an unclean branch of an unclean tree; besides my own uncleanness, I have both by my omissions and commissions involved myself in the guilt of their sins. Have seen - The sight of this glorious and holy God gives me cause to fear that he is come to judgment against me.

6:6 Flew - By God's command. A coal - Both a token and an instrument of purification. The altar - Of burnt - offering.

6:7 Laid it - So as only to touch my lips, and not to burn them; which God could easily effect. Lo - This is a sign that I have pardoned and purged the uncleanness of thy lips.

6:8 Who - To deliver the following message. The change of the number, I and us, is very remarkable; and both being meant of one and the same Lord, do sufficiently intimate a plurality of persons in the Godhead.

15 

15:2 Ye are saved, if ye hold fast - Your salvation is begun, and will be perfected, if ye continue in the faith.Unless ye have believed in vain - Unless indeed your faith was only a delusion.

15:3 I received - From Christ himself. It was not a fiction of my own. Isa 53:8-9.

15:4 According to the scriptures - He proves it first from scripture, then from the testimony of a cloud of witnesses. Psa 16:10.

15:5 By the twelve - This was their standing appellation; but their full number was not then present.

15:6 Above five hundred - Probably in Galilee. A glorious and incontestable proof! The greater part remain - Alive.

15:7 Then by all the apostles - The twelve were mentioned Co1 15:5. This title here, therefore, seems to include theseventy; if not all those, likewise, whom God afterwards sent to plant the gospel in heathen nations.

15:8 An untimely birth - It was impossible to abase himself more than he does by this single appellation. As an abortion is not worthy the name of a man, so he affirms himself to be not worthy the name of an apostle.

15:9 I persecuted the church - True believers are humbled all their lives, even for the sins they committed before they believed.

15:10 I laboured more than they all - That is, more than any of them, from a deep sense of the peculiar love God had shown me. Yet, to speak more properly, it is not I, but the grace of God that is with me - This it is which at first qualified me for the work, and still excites me to zeal and diligence in it.

15:11 Whether I or they, so we preach - All of us speak the same thing.

5 

5:1  Mat 4:18; Mar 1:16.

5:6 Their net brake - Began to tear.

5:8 Depart from me, for I am a sinful man - And therefore not worthy to be in thy presence.

5:11 They forsook all and followed him - They had followed him before, Joh 1:43, but not so as to forsake all. Till now, they wrought at their ordinary calling.