"Honour the Lord with thy substance and with the first fruits of all thine increase" - Proverb 3:9
First Fruits are God's command to all Christians in order to respect ordinances and God's personality, by which he has promised that your barn will burst and your blessing will become global by doing so. Your total obedience and submission is required, if you don't want to be trapped in all your income and efforts. (Romans 5:19). Your First Fruit is a sacrifice and a sign that you surrender to God through the year. ((Exodus 13:1, 12 -15)).
When we keep God's commandment according to (Proverb 3:9) God will lift you and release His upon your life. Our perfect example is Abraham (Genesis 22:15-18). Abraham honoured God with Isaac and he was blessed. The benefits are: Drastic Increase, Adequate overflow, Unexpected open doors and lifting above scarcity etc. May the Lord help us to abide.
First Fruits of all types is what God asks from His children. To pay our first fruits is to be establish more in accordance of His promises and covenants with us.
God bless you.