King James Version (KJV)
Happy shall he be, that taketh and dasheth thy little ones against the stones.
Modern English
Blessed shall he be who takes your little ones and dashes them against the rock!
Hebrew
אַשְׁרֵ֤י ׀ שֶׁיֹּאחֵ֗ז וְנִפֵּ֥ץ אֶת עֹלָלַ֗יִךְ אֶל הַסָּֽלַע׃
ʾashrey ׀ sheyoʾḥez vnipeṣ ʾet ʿolalayik ʾel hasalaʿ