You have to know how to defend the Cause.

You have to know how to defend the Cause. Not only to teach the Cause and proclaim the Cause but to defend the Cause. Everywhere it's going to be - it specifies Europe, particularly, everywhere. This is the Cause of God. It is progressing. It is developing. The other religions will be concerned. The House of Justice is telling us we are engaged in the process of entry by troops. When we have entry by troops, the others will be hoping, tell the Baháʼís "Bravo!". They won't say "Bravo!". They will oppose us. They will resist the growth of the Faith. They will try to stop the growth of the Faith. We have to be ready for this. We have to know how to defend the Cause.

(Transcript of: Scholarship, the Power of Understanding and Service by Ali Nakhjavani)

https://bahai.works/Transcript:Ali_Nakhjavani/Scholarship,_Understanding_and_Service