Final answer:
Jonathan Edwards' comparison between God holding the humans over hell and a human holding an insect over a fire portrays C) God as all-powerful and frightening.
Step-by-step explanation:
Jonathan Edwards' comparison between God holding humans over hell and a human holding an insect over a fire has the effect of portraying God as C) all-powerful and frightening. This comparison emphasizes the immense power and wrath of God, as well as the terrifying consequences of sin. Edwards uses vivid imagery to convey the fear and dread that sinners should feel in the face of God's judgment.