William Burkitt on Luke 17:6

Here our Saviour tells his disciples, that if they have the smallest degree of true faith, lively, operative faith, it will enable them to perform this difficult duty of forgiving injuries, and all other duties, with as much facility and ease as a miraculous faith would enable them to remove mountains and transplant trees.

Learn, that there is nothing which may tend to the glory of God, or to our own good and comfort, but may be obtained of God by a firm exercise of faith in him: All things are possible to him that believeth.