Wow, it sounds like you had a truly meaningful and enlightening experience with your Muslim brother from Basilan. It's wonderful to hear that you were able to build a friendship with him and that he was able to share his personal testimony of how he encountered Jesus Christ in his life. It's truly a testament to the power of love, respect and open-mindedness in building bridges between different communities and religions. It's also great to hear that you were able to bring him to a church to share his testimony, and that the senior pastor was open to the idea. It's very important to always be sensitive and respectful of different cultures and beliefs, as you mentioned, and to be a positive example of love, kindness and understanding to others. Thank you for sharing your testimony and for spreading the message of love and unity. May God continue to bless you and guide you in your journey.