“The smallest faith acknowledges its own infirmity, experiences it, and laments it (Mark 9:24), whereas unbelief is free from care (Rev. 3:17; Luke 18:11–12). (4) The smallest faith pants after remedies (Mark 9:24; 1 Peter 2:2); conversely, unbelief, as it is dead, is therefore without sense and without desire (John 5:40; Matt. 23:37).”

PETRUS VAN MASTRICHT, THEORETICAL-PRACTICAL THEOLOGY, VOLUME 2: FAITH IN THE TRIUNE GOD, 69.