We can only bear fruit by remaining faithful to Jesus Christ. It's in the Bible, John 15:4, NIV. "Remain in me, and I will remain in you. No branch can bear fruit by itself; it must remain in the vine, Neither can you bear fruit unless you remain in me."
What kind of fruit does God expect from us? It's in the Bible, Galatians 5:22-23, TLB. "When the Holy Spirit controls our lives he will produce this kind of fruit in us: love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, and self-control."
What man sows in this life, he reaps. It's in the Bible, Galatians 6:7, NIV. "Do not be deceived: God cannot be mocked. A man reaps what he sows."
A person can be known by the way he lives. It's in the Bible, Matthew 7:20, NIV. "Thus, by their fruits you will recognize them."