sharp, etc.

Psalm 57:4
My soul is among the lions; I lie down with ravenous beasts whose teeth are spears and arrows, whose tongues are sharp swords.

Psalm 59:7
See what they spew from their mouths--sharp words from their lips: "For who can hear us?"

Proverbs 11:9, 12, 18
With his mouth the ungodly man destroys his neighbor, but through knowledge the righteous are rescued. . . .

Proverbs 16:27
A worthless man digs up evil, and his speech is like a scorching fire.

Proverbs 18:8, 21
A gossip's words are like choice morsels, and they sink into the inmost being. . . .

James 3:5-8
In the same way, the tongue is a small part of the body, but it boasts of great things. Consider how small a spark sets a great forest ablaze. . . .

arrows

Psalm 7:13
He has prepared His deadly weapons; He ordains His arrows with fire.

Psalm 52:5
Surely God will bring you down to everlasting ruin; He will snatch you up and tear you away from your tent; He will uproot you from the land of the living. Selah

Psalm 140:9, 11
May the heads of those who surround me be covered in the trouble their lips have caused. . . .

Deuteronomy 32:23, 24
I will heap disasters upon them; I will spend My arrows against them. . . .

Proverbs 12:22
Lying lips are detestable to the LORD, but those who deal faithfully are His delight.

Proverbs 19:5, 9
A false witness will not go unpunished, and one who utters lies will not escape. . . .

Revelation 21:8
But to the cowardly and unbelieving and abominable and murderers and sexually immoral and sorcerers and idolaters and all liars, their place will be in the lake that burns with fire and sulfur. This is the second death."