Galatians 4:4-6

Verse 4

When the fullness of the time was come - The time which God in his infinite wisdom counted best; in which all his counsels were filled up; and the time which his Spirit, by the prophets, had specified; and the time to which he intended the Mosaic institutions should extend, and beyond which they should be of no avail.

God sent forth his Son - Him who came immediately from God himself, made of a woman, according to the promise, Gen 3:15; produced by the power of God in the womb of the Virgin Mary without any intervention of man; hence he was called the Son of God. See Luke, Luk 1:35, and the note there.

Made under the law - In subjection to it, that in him all its designs might be fulfilled, and by his death the whole might be abolished; the law dying when the Son of God expired upon the cross.
Verse 5

To redeem them - Εξαγορασῃ· To pay down a price for them, and thus buy them off from the necessity of observing circumcision, offering brute sacrifices, performing different ablutions, etc., etc.

That we might receive the adoption of sons - Which adoption we could not obtain by the law; for it is the Gospel only that puts us among the children, and gives us a place in the heavenly family. On the nature of adoption see the notes on Rom 8:15.
Verse 6

And because ye are sons - By faith in Christ Jesus, being redeemed both from the bondage and curse of the law; God - the Father, called generally the first person of the glorious Trinity, hath sent forth the Spirit - the Holy Ghost, the second person of that Trinity, of his Son - Jesus Christ, the third person of the Trinity - crying, Abba, Father! from the fullest and most satisfactory evidence that God, the Father, Son, and Spirit, had become their portion. For the explanation of the phrase, and why the Greek and Syriac terms are joined together here, see the notes on Mar 14:36, and on Rom 8:15 (note).
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