So, we can say with confidence [Psa. 118:6], “[Since] the Lord is my helper, I will not be afraid [of] what people might do to me.” [or, “what (harm) can people do to me?”]
And do not be afraid of those who can kill your body but not your soul. Instead, fear Him [i.e., God] who is able to destroy both your soul and body in hell. [See note on 5:29].