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

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.