4 Bible Verses about Sharpness

For God's word is alive and active and sharper than any double-edged sword. It penetrates [deep enough] even to divide [a person's] soul [from his] spirit, and his joints [from his] bone marrow [Note: This is figurative language describing the penetrating effect of God's word into a person's spiritual, inner being] and is able to judge the thoughts and intentions of a person's heart.

A heated discussion developed [over this matter] so that Paul and Barnabas went their separate ways [over it], with Barnabas sailing for Cyprus and taking [John] Mark with him.

This is the reason I am writing these things while away from you, so that I will not have to deal severely with you when I am there. For the Lord gave me authority to build people up [spiritually] and not to tear them down.

And I looked, and there in front of me I saw a white cloud, and on the cloud was seated someone who looked like the Son of man [See Dan. 7:13]. He had a golden crown on His head and a sharp sickle in His hand. Then another angel [i.e., the fourth] came out of the Temple, calling out with a loud voice to Him who was sitting on the cloud, "Use your sharp sickle to reap [a harvest] because it is harvest time, and the crop of the earth is ripe." And He who sat on the cloud swung His sickle onto the earth, and its crop was harvested.read more.
Then another angel [i.e., the fifth] came out of the Temple which is in heaven, and he also had a sharp sickle. Then another angel [i.e., the sixth] came out of the Altar. He had authority over [its] fire and he called out in a loud voice to the one who had the sharp sickle [i.e., the fifth angel] saying, "Use your sharp sickle to gather the clusters from the vines of the earth, for its grapes are ripe."