"Faith, when it is strong, can look through a thick cloud of desertion, and discern the affection of a Father, under the appearance of an enemy.
It is also according to the exercise of their faith, that believers are comforted. If the Christian seldom exercises faith, his consolation is proportionately small: if he exercises it frequently, and rather because it is his duty, than merely because he is impelled to it by a painful sense of need, his holy consolation is, in proportion, great. The more frequently, and simply, he acteth faith on Christ the Consolation of Israel, as the object thereof, and on the good tidings of great joy to all people, as the ground of it; the more, will he have the comfort of being conscious, that he has the grace of faith. Besides, the more cordially and frequently he exerciseth faith, the more of spiritual pleasure, will he enjoy: for, to trust cordially that, Jesus loveth and saveth me, and that, he will save me with an everlasting salvation, is in itself, a delightful, a cheering persuasion. Moreover, faith is the instrument by which, the believer received consolation at first, and by which, he continues to receive it still. It is by trusting daily in the Lord Jesus, for all his salvation, of which, holy consolation is a part; that the Christian derives daily, renewed supplies of spiritual consolation, from his fullness.
"The more frequent, and simple, and lively, his actings of confidence in his gracious Redeemer, are; the more of holy comfort, will he in every time of need receive. To feel comfortable, when he is conscious that, he has clear evidences of his vital union with Christ, is a duty; but, to take his comfort fresh from the fountain, by the direct application and particular trust of faith, is still a greater duty; a duty, by which he glorifies his faithful Redeemer more, and receives an increase of pure and solid consolation. Hence, are these cheering passages of Scripture: "I had fainted, unless I had believed to see goodness of the Lord, in the land of the living." "I have trusted in thy mercy, my heart shall rejoice in thy salvation." "Let not your heart be troubled: ye believe in God, believe also in me." "Now the God of hope, fill you with all joy and peace in believing." "We who have believed do enter into rest.""John Colquhoun, A Treatise on Spiritual Comfort