'Sharpen' in the Bible

You shall teach them diligently to your children [impressing God’s precepts on their minds and penetrating their hearts with His truths] and shall speak of them when you sit in your house and when you walk on the road and when you lie down and when you get up.

when I sharpen My flashing sword,and My hand takes hold of judgment,I will take vengeance on My adversariesand repay those who hate Me.

But all the Israelites went down to the Philistines, to sharpen every man his share, and his coulter, and his axe, and his mattock.

Yet they had a file for the mattocks, and for the coulters, and for the forks, and for the axes, and to sharpen the goads.

If anyone does not repent,God will sharpen His sword;He has strung His bow and made it ready.

who sharpen their tongues like swordsand aim bitter words like arrows,

They sharpen their tongues like a serpent; the venom of vipers is on their lips. Interlude

If the ax is dull, and one does not sharpen its edge,then one must exert more strength;however, the advantage of wisdom is that it brings success.

Harness the horses to the chariots! Mount your horses! Put on your helmets and take your positions! Sharpen you spears! Put on your armor!

Sharpen the arrows!Fill the quivers!The Lord has put it into the mindof the kings of the Medesbecause His plan is aimed at Babylonto destroy her,for it is the Lord’s vengeance,vengeance for His temple.