Deuteronomy 23:15

Overview - Deuteronomy 23
Who may or may not enter into the congregation.
Uncleanness is to be avoided in the host.
15 Of the fugitive servant.
17 Of filthiness.
18 Of abominable sacrifices.
19 Of usury.
21 Of vows.
24 Of trespasses.
Treasury of Scripture Knowledge

Deuteronomy 23:15  (King James Version)
Thou shalt not deliver unto his master the servant which is escaped from his master unto thee:

We cannot suppose that this law required the Israelites to entertain slaves who had robbed their masters, or left their service without cause; but such only as were cruelly treated, and fled to them for protection, especially from the neighbouring nations. To such they were commanded to afford shelter, and shew great kindness.
1 Samuel 30:15 ; Obadiah 1:14 ; Philemon 10:19