Proselytizing, which is to say converting, in Christianity is seen as a positive, and to be “militantly proselytizing” is not meant as a literal “militant” but as “vigorous and active”. Christianity believes very much in exposing (and thus saving) as many souls to God as possible in a (naturally) non-violent way.

And the main way to proselytize in modern churches is via helping the less fortunate in local communities and with mission trips to third-world countries, which is certainly compelling.

Ahh - that's a unique usage of 'militantly' - I've never seen it before.

Kind of a bad mix of priorities. Please keep away from the Sentinelese.