The prophet Joel likened the preaching activity of anointed Christians to a devastating plague of insects, including locusts.
كَانَ عَمَلُ ٱلشَّهَادَةِ فِي ٱلْقَرْنِ ٱلْأَوَّلِ لَمْحَةً مُسْبَقَةً عَنْ عَمَلٍ أَعْظَمَ يَجْرِي فِي أَيَّامِنَا .‏