This is in contrast to legalism, or akribia (Greek: ακριβεια), which is strict adherence to the letter of the law of the church.
Lossky writes: "The distinction between οικονομια [economy] and θεολογια [theology] [...] remains common to most of the Greek Fathers and to all of the Byzantine tradition.
"[3] The Ecumenical Patriarchate considers that through "extreme oikonomia [economy]", those who are baptized in the Oriental Orthodox, Roman Catholic, Lutheran, Old Catholic, Moravian, Anglican, Methodist, Reformed, Presbyterian, Church of the Brethren, Assemblies of God, or Baptist traditions can be received into the Eastern Orthodox Church through the sacrament of Chrismation and not through re-baptism.
[4] In the canon law of the Eastern Orthodox Church, the notions of akriveia and economia (economy) also exist.
Akriveia, which is harshness, "is the strict application (sometimes even extension) of the penance given to an unrepentant and habitual offender."