4 But when the proper time had fully come, God sent His Son, born of a woman, born subject to [the regulations of] the Law,
5 To purchase the freedom of (to ransom, to redeem, to atone for) those who were subject to the Law, that we might be adopted and have sonship conferred upon us [and be recognized as God's sons].
6 And because you [really] are [His] sons, God has sent the [Holy] Spirit of His Son into our hearts, crying, Abba (Father)! Father!
7 Therefore, you are no longer a slave (bond servant) but a son; and if a son, then [it follows that you are] an heir by the aid of God, through Christ.
8 But at that previous time, when you had not come to be acquainted with and understand and know the true God, you [Gentiles] were in bondage to gods who by their very nature could not be gods at all [gods that really did not exist].
9 Now, however, that you have come to be acquainted with and understand and know [the true] God, or rather to be understood and known by God, how can you turn back again to the weak and beggarly and worthless elementary things [of all religions before Christ came], whose slaves you once more want to become?
10 You observe [particular] days and months and seasons and years!