תִּפְאֶ֣רֶת בַּחוּרִ֣ים כֹּחָ֑ם וַהֲדַ֖ר זְקֵנִ֣ים שֵׂיבָֽה׃
Слава молодых людей - их сила; а красота стариков седая голова.
Rashi
The glory of young men is their strength Just as the glory of young men is their strength, so is the beauty of elders their hoary head.