Galatians 4:6

“And because ye are sons, etc..] That is of God, so some copies read; and the Ethiopic version, “inasmuch as ye are his sons”; not in so high a sense as Christ is the Son of God; nor in so low a sense as all men are his offspring; nor in such sense as magistrates are the children of the most High; nor merely on account of a profession of religion, as the “sons of God” was a phrase very early used of the worshippers of the true God; but by virtue of adoption, and which is not owing to the merits of men, who are by nature children of wrath, but to the free rich sovereign grace of God. It is a privilege and blessing of grace in which all the three persons are concerned. The Father has…”

“because ye are sons--The gift of the Spirit of prayer is the consequence of our adoption. The Gentile Galatians might think, as the Jews were under the law before their adoption, that so they, too, must first be under the law. Paul, by anticipation, meets this objection by saying, YE ARE sons, therefore ye need not be as children (Gal 4:1) under the tutorship of the law, as being already in the free state of "sons" of God by faith in Christ (Gal 3:26), no longer in your nonage (as "children," Gal 4:1). The Spirit of God's only Begotten Son in your hearts, sent from, and leading you to cry to, the Father, attests your sonship by adoption: for the Spirit is the "earnest of your inheritance"…”

“And because ye are sons - As a consequence of your being adopted into the family of God, and being regarded as his sons. It follows as a part of his purpose of adoption that his children shall have the spirit of the Lord Jesus. The Spirit of his Son - The spirit of the Lord Jesus; the spirit which animated him, or which he evinced. The idea is, that as the Lord Jesus was enabled to approach God with the language of endearment and love, so they would be. He, being the true and exalted Son of God, had the spirit appropriate to such a relation; they being adopted, and made like him, have the same spirit. The “spirit” here referred to does not mean, as I suppose: the Holy Spirit as such; nor the…”

“And because ye - Gentiles who believe, are also thus made his adult sons, God hath sent forth the Spirit of his Son into your hearts likewise, crying, Abba, Father - Enabling you to call upon God both with the confidence, and the tempers, of dutiful children. The Hebrew and Greek word are joined together, to express the joint cry of the Jews and gentiles. Galatians 4:7”

“4:6 The Holy Spirit provides an inner testimony to assure us that we are God’s children (see Rom 8:16; Eph 1:13-14). • Those who have the Spirit of his Son are able to address God as Father, just as Christ did (Mark 14:36; cp. Matt 6:9).”

“God: Luk 11:13; Joh 7:39, Joh 14:16; Rom 5:5, Rom 8:15-17; Co2 1:22; Eph 1:13, Eph 4:30 the Spirit: Joh 3:34, Joh 15:26, Joh 16:7; Rom 5:5, Rom 8:9, Rom 8:15; Co1 15:45; Phi 1:19; Pe1 1:11; Rev 19:10 crying: Isa 44:3-5; Jer 3:4, Jer 3:19; Mat 6:6-9; Luk 11:2; Rom 8:26, Rom 8:27; Eph 2:18; Eph 6:18; Heb 4:14-16; Jde 1:20 Galatians 4:7”