Isaiah 42 announces a servant empowered by God's Spirit to bring justice to the nations. Later in the chapter, Kedar and other places are called to celebrate. A Muslim interpretation sometimes treats the mention of Kedar as identification of the servant with Muhammad. The geographical connection is then joined to the servant's law and worldwide influence.

The Christian answer must consider the complete literary movement. The chapter first describes the servant and his mission, then summons a wide range of peoples to praise God. A place included among those celebrating is not automatically the birthplace or ancestry of the servant. That distinction is the first issue the proposed identification must address.

Verses 1–4 emphasize the servant's faithfulness in establishing justice and his gentleness toward the vulnerable. Verses 5–7 ground the commission in the Creator and describe the servant as a covenant for the people and a light for the nations. Deliverance from blindness and confinement belongs to that mission.

The portrait must be evaluated as a whole. Isolated agreement with one feature, such as influence beyond one nation, cannot uniquely identify a historical person. Many figures have international influence. An interpretation becomes persuasive when it explains the combination of the servant's relation to God, his manner of ministry, and his work for those needing restoration.

Verses 10–12 move across the sea, islands, wilderness, towns, and mountains in a call to praise. Kedar belongs within that expanding circle. The literary effect is inclusion: people across different regions should celebrate what God is doing. The text does not say that the servant comes from every place listed, nor does it mark Kedar as an exception to that pattern.

The language of divine warfare in verse 13 also requires attention to the subject. The LORD is pictured as a warrior going forth. Transferring that image directly into a biography of the servant requires an additional argument. One cannot simply combine every action in the chapter into a single human life without distinguishing who is speaking and acting.

Isaiah explicitly calls Israel God's servant in 41:8. Chapter 42 later speaks of a blind servant, while its opening portrays one who brings illumination. Isaiah 49:3 names the servant Israel, yet verses 5–6 describe his task of restoring Jacob and bringing salvation beyond Israel. These passages make the servant theme more complex than a single title attached identically to every occurrence.

The Christian reading understands a representative who fulfills Israel's calling and restores the people. It should acknowledge that a collective reading of Israel has substantial textual grounding. The case for a representative individual grows from the servant's relation to Israel and his mission on its behalf, rather than from pretending that Israel is never called the servant.

Matthew 12:14–21 places the citation after opposition to Jesus, his withdrawal, and healing. It identifies his ministry with Isaiah's servant and stresses both gentleness and hope for the nations. The application engages the servant's manner and mission; it is more than a superficial connection to a place-name.

A reader who does not accept Matthew's authority may reject its conclusion. Even so, Matthew remains evidence that the Christian identification arises within the New Testament's account of Jesus. The next question would be whether that account is credible. By contrast, Kedar's inclusion in a hymn of praise does not itself establish the alternative identification with Muhammad.

The mention of Kedar supports the international scope of God's work, but it does not name Muhammad as the servant. A sound interpretation must distinguish the servant's commission from the nations' response and from the LORD's own action. Christians see Jesus fulfilling the mission through the representative service described in Isaiah and explicitly applied to him in Matthew.

That conclusion need not deny the difficulty or richness of Isaiah's servant language. It rests on a cumulative reading of vocation, character, restoration, and New Testament reception. The subject therefore belongs beside the suffering-servant passages, rather than being decided by geography alone.