He is referring to the five inestimable blessings of the safety of his family's lives.
Explanation:
Chinua Achebe's civil war story "Civil Peace" tells the story of a man named Jonathan during the Nigerian civil war. His encounter with the events before and after the war led him to a greater realization of his gratefulness in being alive.
Jonathan had exchanged the rebels' money with 20 pounds which he kept safe. But one night, a group of robbers came and demanded that they be given 100 pounds, which made Jonathan gave up all his money. But the next day, he did not seem to care about the robbery. He went back to his normal life, doing work and stating that there is nothing "<em>greater than other things that went with the war</em>". He was just simply happy and relieved with having his head and that of his family member's heads alive and safe.
