"He shall send from heaven, and save me from the reproach of him that would swallow me up. Selah. God shall send forth his mercy and his truth." Psalm 57:3

And where is God's mercy revealed? Outwardly in the word of God; inwardly in the heart. And it is by sending his mercy into the conscience, shedding abroad his love in the soul, manifesting his pardoning favour within, that God "saves from the reproach of him that would swallow us up."

Man may say, 'I do not doubt your religion; surely you have marks and testimonies of being a child of God!' Ministers may come and endeavour to soothe you, and often by their soothing make more mischief than they mend: 'O, no doubt, if you are exercised with these things you are a child of God;' as though a man could be satisfied with exercises, and because he is hungering and thirsting after the Lord, could be contented with his famine and his drought. No; these things do not touch the secret malady, do not go far enough, nor deep enough, nor come with divine power as from the mouth of the Lord himself. All short of this leaves the poor patient afflicted, desolate, and dejected; and does not remove that under which his soul labours. But mercy, sweet mercy, sent from heaven, and dropped from above into his spirit, applied to his conscience, revealed to his heart, and brought warm into his very soul by the Spirit of God--that saves him from the reproach of every enemy that would swallow him up. For if he can lean, confidently lean upon the arms of mercy, what can man do, what can Satan do, what can sin do, what can death do, what can hell itself do to hurt him? If the mercy of God is upon his side, revealed to his heart, and sent from heaven into his soul, who or what shall swallow him up?