you are not a slave, but a child?

Gal 4:7  Doesn't that privilege of intimate conversation with God make it plain that you are not a slave, but a child? And if you are a child, you're also an heir, with complete access to the inheritance. 

Galatians 4:7

Wherefore thou art no more a servant,.... This is a benefit resulting from adoption, and the manifestation of it to the children of God, and supposes them to have been formerly servants; as whilst in a natural state they were the servants of sin, the vassals of Satan, slaves to the world, and the lusts of it, and in bondage to the law; but now being declared to be the sons of God under the witnessings of the Spirit, they are freed from the servitude of sin, from the captivity of Satan, from the slavery of the world, and particularly from the law, and that spirit of bondage which it brought upon them, which is chiefly designed; and from which they are delivered by the spirit of adoption, enabling and encouraging them to cry "Abba", Father; so that they are now no more under the former servile spirit, the spirit of a servant, 

but a son; whose spirit, state, and case, are vastly different from those of a servant: the servant has not that interest in his master's affections as the son has; nor that liberty of access to him; nor is he fed and clothed as he is, or shares in the same privileges he does; nor is his obedience performed in the same free generous manner, from a principle of love and gratitude, but in a servile and mercenary way; and though he may expect his wages, he cannot hope for the inheritance; nor does he always abide in the house as the son does. He that is once a son, is always so, and no more a servant: predestination to sonship is immutable; it is God's act to put any among the children, and none can put them out; the covenant of grace, in which this blessing is secured, is unalterable; union with Christ, the Son of God, on which it is founded, is indissoluble; the spirit of adoption, wherever he witnesses, abides as such. They that are the sons of God may be corrected and chastised, as they often are, in a fatherly way; but these corrections are proofs for, and not against their sonship; they may indeed judge themselves unworthy to be called the sons of God, and may be in such frames of soul as to conclude, at least fear, they are not; but still the relation abides, and ever will. They will never more be servants, but always sons. The very learned Mr. Selden  thinks the apostle alludes to a custom among the Jews, who allowed only freemen, and not servants and handmaids, to call any Abba, Father such an one, or "Imma", Mother such an one: but this seems to proceed upon a mistaken sense, and rendering of a passage in the Talmud , which is as follows, עבדים ושפחות אין קורין או־תאם אבא פלוני ואמא פלונית; which he thus renders, "neither servants nor handmaids use this kind of appellation, Abba", or "Father such an one", and "Imma", or "Mother such an one"; whereas it should be rendered, "servants and handmaids, they do not call them Abba, Father such an one", and "Imma, Mother such an one"; this is clear from what follows. "The Family of "R. Gamaliel" used to call them Father such an one, and Mother such an one"; which in the other Talmud  is, "the family of" R. Gamaliel "used to call their servants and their handmaids Father Tabi, and Mother Tabitha"; which were the names of the servant and handmaid of Gamaliel. Rather therefore reference is had to a tradition  of theirs, that 

"a servant, who is carried captive, when others redeemed him, if under the notion of a servant, or in order to be one, he becomes a servant; but if under the notion of a freeman, לא ישתעבד, "he is no more a servant".'' 

Or to the general expectation of that people, that when they are redeemed by the Messiah, they shall be servants no more; for so they say , 

"your fathers, though they were redeemed, became servants again, but you, when ye are redeemed, עוד אין א־תאם משתעבדין, "shall be no more servants";'' 

which in a spiritual sense is true of all that are redeemed by Christ, and through that redemption receive the adoption of children, and is what the apostle here means. 

And if a son, then an heir of God through Christ; which is another benefit arising from adoption. Such as are the children of God, they are heirs of God himself; he is their portion and exceeding great reward; his perfections are on their side, and engaged for their good; all his purposes run the same way, and all his promises belong to them; they are heirs of all the blessings of grace and glory, of righteousness, of life, of salvation, and a kingdom and glory; and shall inherit all things, and all "through Christ": he is the grand heir of all things; they are joint heirs with him; their sonship is through him, and so is their heirship and inheritance; their inheritance is in his possession, it is reserved safe in him; and by him, and with him they shall enjoy it. The Alexandrian copy, and some others, only read, "an heir through God", and so the Vulgate Latin version; and the Ethiopic version only, "an heir of God". 

Gal 4:8  Earlier, before you knew God personally, you were enslaved to so-called gods that had nothing of the divine about them. 

Gal 4:9  But now that you know the real God--or rather since God knows you--how can you possibly subject yourselves again to those paper tigers? 

Galatians 4:8

Howbeit then, when ye know not God,.... Whilst in Gentilism, and in a state of unregeneracy, they had no true knowledge of God; though they might know by the light of nature, and works of creation, that there was a God, yet they did not know who he was, but called either mortal men, or some one or other of the creatures, or stocks, and stones, and images of men's device, by this name; they knew not the God of Israel; they did not know God in Christ, and are therefore said to be without him; and a common description of them it is, that they knew not God: and whilst this was their case, what follows was true of them, 

ye did service unto them which by nature are no gods; only by name, and in the opinion of men, but have no divinity in them, are only called gods, mere nominal, fictitious deities, who have nothing of the nature and essence of God in them; for there is but one God by nature and essence, the Father, Son, and Spirit; all others have only the name and appearance, but not the truth of deity; and these the Gentiles in their times of ignorance did "service" to, which is what the Jews call עבודה זרה, "strange service"; that is, idolatry, concerning which there is a whole treatise in the Talmud, and which bears that name (o). This service lay in paying homage to them, worshipping of them, and performing various rites and ceremonies in a way of adoration, and which they reckoned religious service; and which, comparatively speaking, whilst in this state of blindness, was excusable in them; though it is a wonderful instance of grace that such idolaters should be the sons of God. 

(o) Aveda Zara.

Galatians 4:9

But now, after that ye have known God,  God in Christ, as their covenant God and Father, through the preaching of the Gospel, and in the light of divine grace; God having caused light to shine in their dark hearts; and having given them the light of the knowledge of himself in the face of Christ, and having sent down into their hearts the Spirit of his Son, crying "Abba", Father. 

Or rather are known of God; for it is but little that the best of these, that have the greatest share of knowledge, know of him; and what knowledge they have, they have it first, originally, and wholly from him: that knowledge which he has of them is particular, distinct, and complete; and is to be understood, not of his omniscience in general, so all men are known by him; but of his special knowledge, joined with affection, approbation, and care: and the meaning is, that they were loved by him with an everlasting love, which had been manifested in their conversion, in the drawing of them to himself, and to his Son; that he approved of them, delighted in them, had an exact knowledge, and took special care of them: but, oh, folly and ingratitude! 

how turn ye again to the weak and beggarly elements, where-unto you desire again to be in bondage? meaning the ordinances of the ceremonial law, he before calls "the elements of the world", and here "weak", because they could not give life, righteousness, peace, joy, comfort, and salvation; and, since the coming of Christ, were become impotent to all the uses they before served; and beggarly, because they lay in the observation of mean things, as meats, drinks, &c. and which were only shadows of those good things, the riches of grace and glory, which come by Christ. The Galatians are said to turn again to these; not that they were before in the observation of them, except the Jews, but because there was some likeness between these, and the ceremonies with which they carried on the service of their idols; and by showing an inclination to them, they discovered a good will to come into a like state of bondage they were in before; than which nothing could be more stupid and ungrateful in a people that had been blessed with so much grace, and with such clear Gospel light and knowledge.