'Harm' in the Bible

I saw another angel ascend from the sunrise, having the seal of the living God. He cried with a loud voice to the four angels to whom it was given to harm the earth and the sea,

saying, "Don't harm the earth, neither the sea, nor the trees, until we have sealed the bondservants of our God on their foreheads!"

They have tails like those of scorpions, and stings. In their tails they have power to harm men for five months.

For the power of the horses is in their mouths, and in their tails. For their tails are like serpents, and have heads, and with them they harm.

If anyone desires to harm them, fire proceeds out of their mouth and devours their enemies. If anyone desires to harm them, he must be killed in this way.