I do..........that I will faithfully, truly and impartially execute the office of.......... to which I am appointed, and render a true account, when thereunto required, of all public monies by me received or expended, and of all stores or other effects to me intrusted, which belongs to the UNITED STATES, and will, in all respects, discharge the trust reposed in me with justice and integrity, to the best of my skill and understanding.