If envy gets out of bounds, it becomes jealousy. For example, people envy others when others got rich ot raised to the higher position.. And if the person whom you love loves other people, you will envy them. And when this envy gets out of bounds, it will be grown to jealousy which can even cause a murder. Thestory of "Cain and Abel" that we know well is one of these cases. It is said in 1Corinthians 13, "Love does not envy". We should know that envy is a kind of evil which derives from self-respect. Envy can rise in life about living in wealthy, being loved, receiving recognition, being trusted, being raised to the higher position, knowledge, wisdom, honor, authority, love, etc. However, all these things are the corruption in the world and meaningless. So if you have envy in your heart, you should throw it away quickly. Then you can live a beautiful life that is full of joy, love and encouragement for others in Jesus Christ.