3 Bible Verses about Sharpness

So there arose a sharp irritation, so that they parted company; Barnabas taking Mark with him, sailed away to Cyprus;

For this reason I am writing thus while absent, so that when I come, I may not have to deal sharply, according to the authority which the Lord gave me for building up, and not for pulling down.

And I looked, and lo, a white cloud; and on the cloud I saw One sitting like to a son of man, with a golden crown on his head, and a sharp sickle in his hand. And another angel came out of the temple, shouting with a loud voice to him who sat on the cloud. "Thrust in your sickle, and reap; for the time to reap is come. The harvest of the earth is overripe." And he who sat on the cloud thrust in his sickle upon the earth; and the earth was reaped.read more.
And another angel came out of the temple which is in heaven, and he, too, had a sharp sickle. And another angel came from the altar, the angel who has power over fire, and he called with a loud voice to the one who had the sharp sickle, saying, "Thrust in your sharp sickle, And gather the clusters of the vine of the earth, For its grapes are fully ripe."