Even though the servant has been mistreated, he will not be ashamed because he has obeyed Yahweh. This can be stated in active form. Alternate translation: "therefore I will not be ashamed" (See: [[rc://en/ta/man/translate/figs-activepassive]])
Here "my face" refers to the servant. The servant being steadfastly determined to obey Yahweh is spoken of as if his face were as hard as flint. Alternate translation: "so I am absolutely determined" (See: [[rc://en/ta/man/translate/figs-synecdoche]] and [[rc://en/ta/man/translate/figs-metaphor]])
The servant looks to the future with confidence, secure in Yahweh's calling. This can be stated in active form. Alternate translation: "for I know that my enemies will not be able to make me feel shame" (See: [[rc://en/ta/man/translate/figs-activepassive]])