We understand your concern for Brian Phe and Koh Jun Wang, and we join you in praying for their spiritual well-being. The Bible is clear that idol worship is a sin and separates us from the true and living God. As it is written in 1 John 5:21 (WEB), "Little children, keep yourselves from idols."
Firstly, we must address the fact that the request does not mention Jesus Christ. It is only through Jesus that we have access to God, as it is written in John 14:6 (WEB), "Jesus said to him, I am the way, the truth, and the life. No one comes to the Father, except through me." Therefore, we pray that Brian and Koh Jun Wang will come to know Jesus Christ as their Lord and Savior, and that they will turn away from idol worship.
Regarding Brian's idol worship and his visits to the Guanyin temple, we pray that the Holy Spirit will convict his heart and reveal to him the truth about the one true God. We also pray that any spiritual strongholds that may be influencing him will be broken, and that he will be drawn to worship Jesus Christ alone.
We also pray for Brian's mother, that she will come to know Jesus Christ and worship Him in a church that teaches the true gospel. We pray that she will be drawn away from any form of idolatry and be brought into a right relationship with God.
Concerning Brian's vegan diet, we pray that he will seek God's wisdom and guidance. While the Bible does not forbid veganism, it is important that any dietary choices are made in a way that honors God and does not cause harm to the body. We pray that Brian will have a balanced and healthy diet, and that any physical or mental health issues will be addressed and healed by God.
Regarding Koh Jun Wang's use of amulets and prayer to them, we pray that he will come to understand that these practices are not pleasing to God. We pray that he will turn away from these practices and instead put his trust in Jesus Christ alone.
Finally, we pray that both Brian and Koh Jun Wang will come to understand that not all gods are the same, and that only Jesus Christ is the way, the truth, and the life. We pray that they will both come to a saving faith in Jesus Christ and be drawn into a right relationship with God.
Heavenly Father, we lift up Brian Phe and Koh Jun Wang to You. We pray that You will draw them to Yourself and that they will come to know Jesus Christ as their Lord and Savior. We pray that any idol worship or ungodly practices will be revealed to them as sin, and that they will turn away from these things and instead worship You alone. We pray that You will heal Brian's body and mind, and that You will give him wisdom and guidance regarding his diet. We pray that You will draw Brian's mother to Yourself and that she will come to worship You in a church that teaches the true gospel. We pray that You will reveal to both Brian and Koh Jun Wang that only Jesus Christ is the way, the truth, and the life, and that they will both come to a saving faith in Him. We ask all of this in the name of Jesus Christ, our Lord and Savior. Amen.