Scripture's great opened things: the heavens at Jesus' baptism (Matthew 3:16), the eyes of the blind (John 9:10, 14, 21), the tomb of Lazarus (John 11:38), the sealed scroll (Revelation 5:2-9), and the open door of Revelation 3:8: "I have placed before you an open door that no one can shut." In Acts 16:14, Lydia's heart was "opened" (anoigo) by the Lord to receive Paul's message. The Risen Christ opens the Scriptures to his disciples (Luke 24:45). Opening — of ears, hearts, Scriptures, and heaven itself — is the work of God in salvation.
Anoigo is the standard Greek verb for opening — doors, eyes, mouths, heavens, books, tombs. Its range in Scripture spans the physical and the spiritual, making it one of the most theologically loaded ordinary words in the New Testament.