Matthew Henry Commentary Isaiah 50:4-9

"The Lord Jehovah hath given me the tongue of them that are taught, that I may know how to sustain with words him that is weary: he wakeneth morning by morning, he wakeneth mine ear to hear as they that are taught. The Lord Jehovah hath opened mine ear, and I was not rebellious, neither turned away backward. I gave my back to the smiters, and my cheeks to them that plucked off the hair; I hid not my face from shame and spitting. For the Lord Jehovah will help me; therefore have I not been confounded: therefore have I set my face like a flint, and I know that I shall not be put to shame. He is near that justifieth me; who will content with me? let us stand up together: who is mine adversary? let him come near to me. Behold, the Lord Jehovah will help me; who is he that shall condemn me? behold, all they shall wax old as a garment, the moth shall eat them up." — Isaiah 50:4-9 (ASV)

As Jesus was God and man in one person, we find Him sometimes speaking, or spoken of, as the Lord God; at other times, as man and the servant of Jehovah. He was to declare the truths which comfort the broken and contrite heart, those weary of sin, and those harassed with afflictions.

And as the Holy Spirit was upon Him, so that He might speak as never man spoke, so the same Divine influence daily awakened Him to pray, to preach the gospel, and to receive and deliver the whole will of the Father.

The Father justified the Son when He accepted the satisfaction He made for the sin of man. Christ speaks in the name of all believers. Who dares to be an enemy to those to whom He is a Friend? Or who will contend with those for whom He is an Advocate? Thus Saint Paul applies it (Romans 8:33).

Isaiah 50:10–11 A child of God is afraid of incurring His displeasure. This grace usually appears most in believers when in darkness, when other graces do not appear.

Those who truly fear God, obey the voice of Christ. A sincere servant of God may for a long time be without views of eternal happiness. What is likely to be an effectual cure in this sad case?

Let him trust in the name of the Lord; and let him stay himself upon the promises of the covenant, and build his hopes on them. Let him trust in Christ, trust in His name, The Lord Our Righteousness; stay himself upon God as his God, in and through a Mediator. Presuming sinners are warned not to trust in themselves.

Their own merit and sufficiency are light and heat to them. Creature-comforts are like sparks, short-lived and soon gone; yet the children of this world, while they last, seek to warm themselves by them and walk with pride and pleasure in their light. Those who make the world their comfort, and their own righteousness their confidence, will certainly meet with bitterness in the end.

A godly man's way may be dark, but his end shall be peace and everlasting light. A wicked man's way may be pleasant, but his end and eternal abode will be utter darkness.