Hawzah News Agency – Imam al-Sadiq peace be upon him says:

مَن خافَ اللَّهَ أخافَ اللَّهُ مِنهُ كُلَّ شَي‏ءٍ، ومَن لَم يَخَفِ اللَّهَ أخافَهُ اللَّهُ مِن كُلِّ شَي‏ءٍ.

'The one who fears Allah, Allah will make everything fear him, and the one who does not fear Allah, Allah will make him fear everything else.'

Source: al-Kafi, v. 2. p. 28, no. 3