Of course it will be argued by apologists that in order to support Christ's brothers in the preaching work one must be acceptable to God in the first place, becoming an approved associate, at the very least, and all that THAT entails.
Simply getting off the sofa and going therefore to preach won't cut it in Watchtower land. You must be approved, baptized, spiritually clean, well-studied, humble/meek/mild, and let's not forget...organized to accomplish in order to be worthy of supporting Christ's brothers. THIS, they will argue, is the entire package being referred to in the 3-2015 Watchtower. THIS is what will gain you salvation.