General Information:

Yahweh continues speaking to Jeremiah.

you will not be given into the hand of the men whom you fear

Here "hand" refers to power or control. This can be translated in active form. Alternate translation: "the men you fear will not harm you" or "I will not allow anyone to put you under the control of the people whom you fear" (See: rc://en/ta/man/translate/figs-metonymy and rc://en/ta/man/translate/figs-activepassive)