Already the one who reaps is receiving wages and gathering fruit for eternal life, so that sower and reaper may rejoice together.

John 4:36 (ESV)

Honor the Lord with your wealth and with the first fruits of all your produce; then your barns will be filled with plenty, and your vats will be bursting with wine.

Proverbs 3:9-10 (ESV)

"When you reap the harvest of your land, you shall not reap your field right up to its edge, neither shall you gather the gleanings after your harvest. And you shall not strip your vineyard bare, neither shall you gather the fallen grapes of your vineyard. You shall leave them for the poor and for the sojourner: I am the Lord your God.”

Leviticus 19:9-10 (ESV)