Shared ground
These verses present a first-person speaker who knowingly endures public abuse (striking, hair pulled, shame, spitting) rather than withdrawing. The suffering is described as voluntary exposure (“I gave… I didn’t hide my face”), not as a surprise accident.
The explicit reason given is confidence in “the Lord Yahweh” as a sure helper. Because help is expected, the speaker says he is not “confounded” (not finally crushed or exposed as a fool) and he sets his “face like a flint,” a picture of fixed determination. The final expectation is that shame will not be the last word.
Where interpretation differs
Who is the “I”? Some readings take the “I” as Isaiah speaking about his own prophetic experience, or as a representative faithful servant within Israel. Others read the speaker as a distinct servant-figure whose mission involves suffering beyond what is known of Isaiah’s life.
What kind of “not be put to shame” is meant? Many agree it includes public honor/shame, since spitting and disgrace are in view. Some also hear a stronger courtroom-like vindication in the surrounding context (50:8–9), where the speaker expects opponents will fail to prove their case.
What kind of “help” is promised? Some emphasize present, practical support to keep going under pressure (endurance and steadiness). Others emphasize ultimate outcome: even if suffering continues, God will finally overturn the shame.
Why the disagreement exists
The language is poetic and representative, and the wider section (50:4–9) blends physical humiliation with the language of challenge and vindication. That leaves more than one plausible way to identify the speaker and to describe how God’s “help” shows itself (immediate support, final reversal, or both).
What this passage clearly contributes
The passage links obedience and suffering without romanticizing the suffering: hostility is real and humiliating. It also grounds endurance in God’s dependable help rather than in personal toughness alone. Public shame is portrayed as temporary and contested; the speaker expects a different final verdict than what opponents try to impose. Isaiah 50:6–7