Thou hast proved mine heart; thou hast visited me in the night; thou hast tried me, and shalt find nothing; I am purposed that my mouth shall not transgress. Thou hast proved mine heart - Thou well knowest whether there be any evil way in me. Thou hast given me to see many and sore trials; and yet, through thy mercy, I have preserved my integrity both to thee and to my king. Thou hast seen me in my most secret retirements, and knowest whether I have plotted mischief against him who now wishes to take away my life.
Thou hast tried me - צרפתני tseraphtani; Thou hast put me to the test, as they do metals in order to detect their alloy, and to purify them: well expressed by the Vulgate, Igne me examinasti, "Thou hast tried me by fire;" and well paraphrased in my old Psalter, - The examynd me the lykkenyng of the fournas, that purges metal, and imang al this, wykednes es nout funden in me: that es, I am funden clene of syn, and so ryghtwis. - He who is saved from his sin is right wise; he has found the true wisdom.
My mouth shall not transgress - This clause is added to the following verse by the Vulgate and Septuagint: "That my mouth may not speak according to the works of men, I have observed difficult ways because of the words of thy lips." That is, So far from doing any improper action, I have even refrained from all words that might be counted inflammatory or seditious by my adversaries; for I took thy word for the regulation of my conduct, and prescribed to myself the most painful duties, in order that I might, in every respect, avoid what would give offense either to thee or to man. Among the genuine followers of God, plots and civil broils are never found.