The tombs were opened, and many bodies of the saints who had fallen asleep [κοιμάω] were raised; and coming out of the tombs after His resurrection they entered the holy city and appeared to many. (Matthew 27:52–53)
Jesus: “Our friend Lazarus has fallen asleep [κοιμάω]…” Now Jesus had spoken of his death but they thought that He was speaking of literal sleep [ὕπνος]. (John 11:11,13)
They went on stoning Stephen as he called on the Lord and said, “Lord Jesus, receive my spirit!” Then falling on his knees, he cried out with a loud voice, “Lord, do not hold this sin against them!” Having said this, he fell asleep [κοιμάω]. (Acts 7:59–60)
For David, after he had served the purpose of God in his own generation, fell asleep [κοιμάω], and was laid among his fathers, and underwent decay. (Acts 13:36)
For this reason many among you are weak and sick, and a number sleep [κοιμάω]. (1 Corinthians 11:30)
After that He appeared to more than five hundred brethren at one time, most of whom remain until now, but some have fallen asleep [κοιμάω]. (1 Corinthians 15:6)
For if the dead are not raised, not even Christ has been raised… Then those also who have fallen asleep [κοιμάω] in Christ have perished.