Hebrews 1:2

2.Whom he has appointed, heir, etc. He honors Christ with high commendations, in order to lead us to show him reverence; for since the Father has subjected all things to him, we are all under his authority. He also intimates that no good can be found apart from him, as he is the heir of all things. It hence follows that we must be very miserable and destitute of all good things except he supplies us with his treasures. He further adds that this honor of possessing all things belongs by right to the Son, because by him have all things been created. At the same time, these two things (10) are ascribed to Christ for different reasons.

The world was created by him, as he is the eternal wisdom of God, which is said to have been the director of all his works from the beginning; and hence is proved the eternity of Christ, for he must have existed before the world was created by him. If, then, the duration of his time be inquired of, it will be found that it has no beginning. Nor is it any derogation to his power that he is said to have created the world, as though he did not by himself create it. According to the most usual mode of speaking in Scripture, the Father is called the Creator; and it is added in some places that the world was created by wisdom, by the word, by the Son, as though wisdom itself had been the creator, [or the word, or the Son.] But still we must observe that there is a difference of persons between the Father and the Son, not only with regard to men, but with regard to God himself. But the unity of essence requires that whatever is peculiar to Deity should belong to the Son as well as to the Father, and also that whatever is applied to God only should belong to both; and yet there is nothing in this to prevent each from his own peculiar properties.

But the word heir is ascribed to Christ as manifested in the flesh; for being made man, he put on our nature, and as such received this heirship, and that for this purpose, that he might restore to us what we had lost in Adam. For God had at the beginning constituted man, as his Son, the heir of all good things; but through sin the first man became alienated from God, and deprived himself and his posterity of all good things, as well as of the favor of God. We hence only then begin to enjoy by right the good things of God, when Christ, the universal heir, admits to a union with himself; for he is an heir that he may endow us with his riches. But the Apostle now adorns him with this title, that we may know that without him we are destitute of all good things.

If you take all in the masculine gender, the meaning is, that we ought all to be subject to Christ, because we have been given to him by the Father. But I prefer reading it in the neuter gender; then it means that we are driven from the legitimate possession of all things, both in heaven and on earth, except we be united to Christ.