It may be a "strange way " of referring to kidnapping, but that is what it refers to.
Deu 24:7 If a man be found stealing any of his brethren of the children of Israel, and maketh merchandise of him, or selleth him; then that thief shall die; and thou shalt put evil away from among you.
But we know that the law is good, if a man use it lawfully; Knowing this, that the law is not made for a righteous man, but for the lawless and disobedient, for the ungodly and for sinners, for unholy and profane, for murderers of fathers and murderers of mothers, for manslayers, For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine; According to the glorious gospel of the blessed God, which was committed to my trust. (1Ti 1:8-11 KJV)
You are completely comfortable with God having approved of slavery, right?
By what standard do you judge God? Are you holier than God?
Gen 37:26 And Judah said unto his brethren, What profit [is it] if we slay our brother, and conceal his blood?
Gen 37:27 Come, and let us sell him to the Ishmeelites, and let not our hand be upon him; for he [is] our brother [and] our flesh. And his brethren were content.