Can I learn singing without also learning an instrument?

I like the idea of singing a capella and in choruses but don't have the time to add an instrument in. Also, I'm not religious and that would mean having to arrange a lot of pieces due to lack of non-religious chorus and a capella music for sale, right? If so, an instrument would be required as I'd need... show more I like the idea of singing a capella and in choruses but don't have the time to add an instrument in. Also, I'm not religious and that would mean having to arrange a lot of pieces due to lack of non-religious chorus and a capella music for sale, right? If so, an instrument would be required as I'd need to study a lot of music theory.
6 answers 6