The article explores the meaning of personal piety for transformations in the concept of person in ancient Israel and its environment. Therefore, it clarifies the relevant terms such as P/personal piety („P/persönliche Frömmigkeit“), everyday religiosity („Alltagsreligiosität“), Family / Household / Domestic Religion, individual religiosity („individuelle Religiosität“). Traces of a personal piety known from Egypt are found in a Babylonian text from the middle of the 1st millennium BC (the lament of Nabû-šuma-ukîn) and in the Israelite psalms, especially Ps 27 and 42–43. Here, features of a „personal piety“ can be found such as the longing for closeness to God, the supplication for help from the personal God and an intimate relationship with Him, as well es new forms of addressing the interior: in Ps 27 the heart speaks, in Ps 42–43 the speaker talks to the own næpæš. Thus forms of „Personal piety“ proof to be important for the transformation of the concept of person.