Trust in Allah(SWT) ultimately because to Him is our return

And thus We have sent you among a nation before which other nations have passed away, that you might recite to them what We have revealed to you and (still) they deny the Beneficent Allah. Say: He is my Lord, there is no God but He; on Him do I rely and to Him is my return.
—  The Holy Qur'an, Surah Al-Rad, Verse 30 (13:30) (translation by Shakir)