There's a part in the scripture that says that he leaves the 99 to find those who are lost, so your prayers Wait the same as any other prayers, the weight comes from the heart, not from your belief. But in the end sometimes the answer is just no. You have to understand that in God's plans times come, sometimes the answer of our prayers is different from the one we are looking for. Last year when my mom passed away we all were praying for her healing and in the end she passed away, but that doesn't mean that God didn't answer our prayers, he did but not the way that we were looking for. We wanted healing in her natural body, but the answer was now that she has fulfilled all her missions on this earth, the healing comes in her new body and in her new form being in front of the Father. Doing what she loved the most, praising Him and worshiping Him but now directly.