“You are witnesses
Of these things.”
ὑμεῖς μάρτυρες τούτων.
Only Luke uniquely indicated that Jesus said that they were to be witnesses of these things (ὑμεῖς μάρτυρες τούτων). They were to testify and lay down their lives as a witness or martyr for the teachings of Jesus Christ. This was a big demand with a lot of responsibility. Are you willing to be a witness for Jesus?