The story of Esther is such a beautiful story of how God uses everything in our lives to glorifying Him. Esther was there at just the perfect time to save her people, the Jews.
The story of Job is just in the early stages. Satan talks with God because he believes that Job would not praise the Lord if the Lord had not prosper Job. The Lord allows Satan to take away all that he had, Job continues to praise the Lord then Satan says that Job will not praise him if he suffers illness. The Lord allows Satan to take his health. This story continues from there!