Albert Barnes Commentary Matthew 28:7

"And go quickly, and tell his disciples, He is risen from the dead; and lo, he goeth before you into Galilee; there shall ye see him: lo, I have told you." — Matthew 28:7 (ASV)

Tell his disciples. Mark adds particularly, tell "Peter". This was a kind message to Peter, who had so recently denied his Lord. It would serve to cheer him in his despondency, and to assure him that his sin had been forgiven; and it shows the tender love and remembrance of Jesus—even for his unfaithful friends.