[stands2reason]

If I look up the word "oath" in the dictionary, will the word "religious" be anywhere in the result?

I don't see how the word implies religiosity per se.

[Always Right]

If I look up the word "oath" in the dictionary, will the word "religious" be anywhere in the result?

Merriam-Webster Online Dictionary

1 a (1) : a solemn usually formal calling upon God or a god to witness to the truth of what one says or to witness that one sincerely intends to do what one says