Abner: Pretty religious for jews, very religious in an american-christian setting.
Cyrus: Not religious.
Ephraim: Very religious both for jews and christians.
Hiram: While it was in use among christians in the united states, it was barely in use among jews, and only used in the 20th century in the land of israel among zionists.
Ichabod: I wouldn't say it's religious since it's a bad meaning and a very minor biblical character, but it is a very "hebrew" name.
Ira: in my head it's used mostly among less-religious american jews, as a substitute for
Isaac and
Israel.
Jared: it is biblical, but not super religious IMO.
Linus: Since I'm a jew, I can't classify latin names as biblical.
Nicodemas: While again, this is a character from the christian bible, he does appear in the Talmud. I imagine only pretty hardcore christians would use a "heavy" name like that.
Tobias: very religious imo.
Judith is very biblical, despite the fact the book of
Judith is apocrypha.
Tirzah: Very religious, and also a biblical place name.