10 They were looking intently up into the sky as he was going, when suddenly two men dressed in white stood beside them.
References for Acts 1:10
11 “Men of Galilee,” they said, “why do you stand here looking into the sky? This same Jesus, who has been taken from you into heaven, will come back in the same way you have seen him go into heaven.”
References for Acts 1:11

Matthias Chosen to Replace Judas

12 Then the apostles returned to Jerusalem from the hill called the Mount of Olives, a Sabbath day’s walka from the city.
References for Acts 1:12
    • c 1:12 - That is, about 5/8 mile or about 1 kilometer
      13 When they arrived, they went upstairs to the room where they were staying. Those present were Peter, John, James and Andrew; Philip and Thomas, Bartholomew and Matthew; James son of Alphaeus and Simon the Zealot, and Judas son of James.
      14 They all joined together constantly in prayer, along with the women and Mary the mother of Jesus, and with his brothers.
      References for Acts 1:14
      15 In those days Peter stood up among the believers (a group numbering about a hundred and twenty)
      16 and said, “Brothers and sisters,b the Scripture had to be fulfilled in which the Holy Spirit spoke long ago through David concerning Judas, who served as guide for those who arrested Jesus.
      References for Acts 1:16
        • d 1:16 - The Greek word for "brothers and sisters" ("adelphoi" ) refers here to believers, both men and women, as part of God’s family; also in 6:3; 11:29; 12:17; 16:40; 18:18, 27; 21:7, 17; 28:14, 15.
          17 He was one of our number and shared in our ministry.”
          References for Acts 1:17
          18 (With the payment he received for his wickedness, Judas bought a field; there he fell headlong, his body burst open and all his intestines spilled out.
          References for Acts 1:18
          19 Everyone in Jerusalem heard about this, so they called that field in their language Akeldama, that is, Field of Blood.)
          References for Acts 1:19
          20 “For,” said Peter, “it is written in the Book of Psalms: “ ‘May his place be deserted; let there be no one to dwell in it,’cand, “ ‘May another take his place of leadership.’d
          References for Acts 1:20
            • e 1:20 - Psalm 69:25
            • f 1:20 - Psalm 109:8