Deuteronomy 15:18

“It shall not seem hard to you when you set him free, for he has served you six years with double the service of a hired man; so the Lord your God will bless you in everything you do.

Isaiah 16:14

But now the Lord speaks, saying, “Within three years, as the years of a hired man [who will not serve longer than the agreed time], the glory of Moab will be degraded along with all the great population, and the remnant [that survives] will be very small and of no account.”

Isaiah 21:16

For the Lord has said this to me, “Within a year, according to the years of a hired man [who will work no longer than was agreed], all the splendor of [the tribe of] Kedar will end;

Luke 17:7-8

“Which of you who has a servant plowing or tending sheep will say to him when he comes in from the field, ‘Come at once and sit down to eat?’

Treasury of Scripture Knowledge

Summary

It shall not seem hard unto thee, when thou sendest him away free from thee; for he hath been worth a double hired servant to thee, in serving thee six years: and the LORD thy God shall bless thee in all that thou doest.

Shall not

Bible References

Shall not

Deuteronomy 15:10
You shall freely and generously give to him, and your heart shall not be resentful when you give to him, because for this [generous] thing the Lord your God will bless you in all your work and in all your undertakings.

A double

Isaiah 16:14
But now the Lord speaks, saying, “Within three years, as the years of a hired man [who will not serve longer than the agreed time], the glory of Moab will be degraded along with all the great population, and the remnant [that survives] will be very small and of no account.”
Isaiah 21:16
For the Lord has said this to me, “Within a year, according to the years of a hired man [who will work no longer than was agreed], all the splendor of [the tribe of] Kedar will end;
Luke 17:7
“Which of you who has a servant plowing or tending sheep will say to him when he comes in from the field, ‘Come at once and sit down to eat?’