Envy is something that has existed since the time of Abel and Cain, because we already know what happened in this story found in the book of Genesis, where Cain saw how Abel’s offering was more pleasing than his own before God. He was moved to act with envy deceived by the enemy.
Everything that your brother undertakes and gives to the Lord, is the same God who has shown all His excellence and that is why we must show our good conduct before the Lord without envy or being vain before everything.
Let us remember that he who is envious, his spirit will live in affliction. The preacher talks about what happens to people of excellent work and good conduct:
Again, I considered all travail, and every right work, that for this a man is envied of his neighbour. This is also vanity and vexation of spirit.