They stoned (ελιθοβολουν). Same verb and tense repeated, they kept on stoning, they kept it up as he was calling upon the Lord Jesus and making direct prayer to him as "Lord Jesus" (Κυριε Ιησου).

Receive my spirit (δεξα το πνευμα μου). Aorist middle imperative, urgency, receive it now. Many have followed Stephen into death with these words upon their dying lips. See, Acts 9:14; Acts 9:21; Acts 22:16.