Would you not fight a people who broke their oaths and conspired to expel the Messenger, and it was they who started (fighting) against you for the first time? Do you fear them? But Allah has greater right that you fear Him, if you are believers.
Fight them, so that Allah should punish them at your hands and disgrace them, and help you win against them and bring relief to bosoms of the believing people,
Do you think that you will be left alone (without being tested), while Allah has not yet seen those of you who struggle in Jihād and never take anyone as their confidant other than Allah and His Messenger and the believers? Allah is fully aware of what you do.
It is not for the Mushriks to build up the mosques of Allah while they are witnesses of their own infidelity. Those are the ones whose deeds have gone to waste; and in the Fire they shall remain forever.
In fact, the mosques of Allah are built-up only by those who believe in Allah and the Last Day and those who establish Salāh and pay Zakāh and who fear none but Allah. So, it is hoped that they are to be among those on the right path.