Strangers have devoured his strength, and he did not know it. And grey hairs also have spread across him, and he is ignorant of it
Other versions
King James Version
Strangers have devoured his strength, and he knoweth it not: yea, gray hairs are here and there upon him, yet he knoweth not. English Standard Version
Strangers devour his strength, and he knows it not; gray hairs are sprinkled upon him, and he knows it not.New International Version
Foreigners sap his strength, but he does not realize it. His hair is sprinkled with gray, but he does not notice.