The angel said to the women, “Do not be afraid, for I know that you are looking for Jesus, who was crucified. He is not here; he has risen, just as he said. Come and see the place where he lay. Then go quickly and tell his disciples: ‘He has risen from the dead and is going ahead of you into Galilee. Matthew 28:5-7
Even though there is not a verse that specifically says, “tell one another” I believe it’s something we need to do; not just on Easter morning, but every day. Martin Luther said:
“We need to hear the gospel every day because we forget it every day.”
Maybe this falls under the admonishment to “instruct one another.” We Christians need to constantly hear the Gospel — Jesus Christ, died and risen for us. So greet one another this morning with the Easter greeting: “He is risen. He is risen indeed.”