Read 1 Samuel 4:1-10
Over 30000 brothers were killed in battle. They had apparently listened to those "taking the lead" and went to battle although the "ark of the covenant" was not at the right place. So Jehovah had probably wanted them to disobey those brothers.
What does this tell me about Jehovah? That it is really hard to know what he wants from you, if you listen to the ones in charge. That he allows women to be widows and children to be fatherless boys so we have many of those to care for.
How can I apply this information in my life? Jehovah wants me to disobey the "slave" when they go against him or I will get killed!
How can I use it to help others? It might be helpful to see the ttatt. One elder I confronted with this passage in the Bible and he actually seemed to get it.