[4:4] 1 tn Grk “the fullness of time” (an idiom for the totality of a period of time, with the implication of proper completion; see L&N 67.69).
[4:5] 2 tn The Greek term υἱοθεσία (Juioqesia) was originally a legal technical term for adoption as a son with full rights of inheritance. BDAG 1024 s.v. notes, “a legal t.t. of ‘adoption’ of children, in our lit., i.e. in Paul, only in a transferred sense of a transcendent filial relationship between God and humans (with the legal aspect, not gender specificity, as major semantic component).” Although some modern translations remove the filial sense completely and render the term merely “adoption” (cf. NAB), the retention of this component of meaning was accomplished in the present translation by the phrase “as sons.”