'Hairs' in the Bible

Those who hate me without cause are more than the hairs of my head. My persecutors are mighty, and they want to destroy me. Must I be forced to return what I did not steal?

Even until your old age, I am the one, and I'll carry you even until your gray hairs come. It is I who have created, and I who will carry, and it is I who will bear and save.