Here is the response of faith. ‘Thou knowest!’—what a pillow for the heart to repose upon! ‘Thou knowest!’— what few but comprehensive words to sum up and express the heart’s difficulties and perplexities and trials. ‘ Thou knowest!’—what an inexpressibly sweet resting-place in the midst of life’s tumultuous heavings; in the midst of a sea that knows no calm; in the midst of a scene in which tossings to and fro are the hourly history! What an answer they contain for every heart that can find no words to express its big emotions; for a heart whose sorrows are too deep for language to find its way to God! Oh, that they were ever uppermost in the soul, as the response to every difficulty in our path! They are God’s answer to everything we cannot fathom; God’s answer for our hearts to rest upon, and our lips to utter, when every way is hedged up so that we cannot pass. ‘O Lord God, thou knowest!’ Rest here, believer. Lean thy soul on these words. Repose calmly on the bosom of thy God, and carry them with thee into every scene of life. ‘O Lord God, thou knowest.