Read Revelation 7:9-17
36 In Joppa there was a woman named Tabitha, who was a believer. (Her name in Greek is Dorcas, meaning “a deer”.) She spent all her time doing good and helping the poor. 37At that time she became ill and died. Her body was washed and laid in a room upstairs. 38Joppa was not very far from Lydda, and when the believers in Joppa heard that Peter was in Lydda, they sent two men to him with the message, “Please hurry and come to us.” 39So Peter got ready and went with them. When he arrived, he was taken to the room upstairs, where all the widows crowded round him, crying and showing him all the shirts and coats that Dorcas had made while she was alive. 40Peter put them all out of the room, and knelt down and prayed; then he turned to the body and said, “Tabitha, get up!” She opened her eyes, and when she saw Peter, she sat up. 41Peter reached over and helped her get up. Then he called all the believers, including the widows, and presented her alive to them. 42The news about this spread all over Joppa, and many people believed in the Lord. 43Peter stayed on in Joppa for many days with a tanner of leather named Simon.
"They have washed their robes and made them white with the blood of the Lamb." - Verse 14
Jesus' sacrifice has purified them and made them worthy of their being a part of the heavenly crowd. Verse 16 and 17 explain how the Father and the Son continue to minister to them in heaven.
Lord I remember those who are in your care - and I pray that you would continue to cleanse me through your sacrifice - and when my days are complete; continue your ministry of healing and restoration to me.