FIRST- FRUIT FOR GOD

First Fruits are a religious offering of the first agricultural produce of the harvest. In classical Greek, Roman, Hebrew and Christian religions, the first fruits were given to priests to offer to God.

The first fruit offering is to God a way of demonstrating the principle of putting Him first in all things. It shows the act of loving the Lord with all of your heart, soul and mind. [Matthew 22:32-38]. The first fruit simply refers to the initial or the first harvest of one’s labour and does not necessarily refer to agricultural produce, but whatsoever benefits come to us as a result of our labour or service rendered. 

New Living Translation
Honour the LORD with your wealth and with the best part of everything you produce.
King James Bible
Honour the LORD with thy substance, and with the first fruits of all thine increase:
Holman Christian Standard Bible
Honour the LORD with your possessions and with the first produce of your entire harvest; 
COMMAND     Exodus 22:29
"Do not hold back offerings from your granaries or your vats. "You must give me the firstborn of your sons.
Exodus 23:19
"Bring the best of the Firstfruits of your soil to the house of the LORD your God. "Do not cook a young goat in its mother's milk.
Deuteronomy 26:2
take some of the first fruits of all that you produce from the soil of the land the LORD your God is giving you and put them in a basket. Then go to the place the LORD your God will choose as a dwelling for his Name