Sharpen

Sharpen sharp·​en /ˈSHärpən/ Verb

1. to make a pointed edge

“The expectations of life depend upon diligence; the mechanic that would perfect his work must first sharpen his tools.”

– Confucius (551 B.C. – 479 B.C)

2. to make acute or more sensitive to feeling

“As iron sharpens iron, so one person sharpens another.”

– Proverbs 27:17