Exodus 21:19 requires compensation for lost time when a free person is injured, contrasting here with a slave's freedom for losing a tooth.

Exodus 21:24's 'tooth for tooth' for free persons contrasts with the slave's freedom as compensation for a lost tooth.

Exodus 21:20 deals with a slave's death from a beating — a different outcome than the non-lethal tooth loss that triggers freedom.

Job 31:13 shows Job not despising his slaves' cause — aligning with the law's protection of slaves from abuse.