The joy of youths is their strength. And the dignity of old men is their grey hairs.
The glory of young men is their strength: And the beauty of old men is the grey head.
The glory of young men is their strength, and the beauty of old men is their gray head [suggesting wisdom and experience].
The glory of young men is their strength; And the beauty of old men is the hoary head.
Strength is the glory of young men; gray hair is the splendor of old age.