From slaves to heirs.
Question -- in what way are humans slaves?
John 8:34 Whosoever commits sin is the slave of sin.
Romans 6:17 you were the slaves of sin
Every soul that refuses to give himself to God is under the control of another power. He is not his own. He may talk of freedom, but he is in the most abject slavery. He is not allowed to see the beauty of truth, for his mind is under the control of Satan. While he flatters himself that he is following the dictates of his own judgment, he obeys the will of the prince of darkness. Christ came to break the shackles of sin-slavery from the soul. "If the Son therefore shall make you free, ye shall be free indeed." "The law of the Spirit of life in Christ Jesus" sets us "free from the law of sin and death." Romans 8:2. {DA 466.3}
Who seeks to redeem us from slavery and adopt us as His children?
Come out from among them, and be separate, saith the Lord, and I will receive you, and ye shall be sons and daughters of the Lord Almighty. What a promise is this! It is a pledge to you that you shall become members of the royal family, heirs of the heavenly kingdom. If a person is honored by, or becomes connected with, any of the monarchs of earth, how it goes the rounds of the periodicals of the day and excites the envy of those who think themselves less fortunate. But here is One who is King over all, the monarch of the universe, the Originator of every good thing; and He says to us: I will make you My sons and daughters; I will unite you to Myself; you shall become members of the royal family and children of the heavenly King. {2T 592.1}