The Scriptures answer by saying that it ‘ will guard our hearts and our mental powers by means of Christ Jesus. ’
يَقُولُ ٱلْكِتَابُ ٱلْمُقَدَّسُ إِنَّهُ ‹ يَحْرُسُ قُلُوبَنَا وَقُوَانَا ٱلْعَقْلِيَّةَ › .‏