Nechemyah 1:6

Let Thine ear now be attentive, and Thine eyes open, that Thou mayest hear the tefillah of Thy eved, which I am davening before Thee now, yomam valailah, for the Bnei Yisroel Thy avadim, and mitvaddeh al chattot (confess the sins) of the Bnei Yisroel, which we have sinned against Thee. Both I and the Bais Avi have sinned.