"Let us hear the conclusion of the whole matter: Fear God and keep His commandments, For this is man's all. For God will bring every work into judgement, including every secret thing, whether good or evil." Ecclesiastes 12:13,14comments
In the end what is the purpose of life? It is to worship God in fear and reverence. Fear does not mean terror, but healthy respect and fear of the consequences if we do not. He is a God to be feared.