Would you not fight a people who broke their pledges and attempted to expel the Messenger, and they had begun the attack against you at first? Are you fearing them? Then it is Lord Allah whom you deserve to fear if you are believers.
Believers are living only for Lord Allah. So, they are commanded to fight with the disbelievers—who are the enemy of Allah—without considering the kinship and worldly gains as explained in verses 8: 17-18. Today, Arabic Qur’an reading Fujjar are celebrating Eid and fasting by observing the moon in different places on different days without accepting Qibla at Mecca. So, the odd-believer shouldn’t obey or fear them, and they should only fear the Lord as explained in verses 2: 149-150. See explanations 5: 54-56; 8: 30 and 46-48.