Allāh ﷻ has promised to protect His ﷻ Book and His ﷻ religion and that if we call on Him ﷻ, He ﷻ will answer. He ﷻ gave us all the ṣaḥābah like stars and magnificent scholars to keep His ﷻ religion pure. Follow them and don't worry. His ﷻ promise is true.