They will strongly dispute your philosophy. They will also disagree with your interpretation of scripture. This is true. This is the power of the personal testimony. We don't need to declare doctrine to sinners.
Indoctrination comes after salvation.
We need to train our people when to witness, where to witness, how to witness and how to give their testimony. We need to provide them with opportunities to witness and motivate them to do so on a consistent basis. Saints will only do what you train them to do. If the only example they see is the pastor pounding on the pulpit, screaming fire and judgement - then that is the approach they will use. If the only example they hear is a heavy doctrinal dissertation, replete with the finer details of expository minutiae - then that will be their message too.