Yes once there was a baby in a manger, but the baby did not stay in the manger. He grew to be a man. Though the manger is important, the manger is now empty. .
Yes, the baby that was in that manger grew to be a man, and one day they took him and put him to death by crucifixion on a cross, but he did not remain on that cross as his dead body was taken down and placed in a tomb. Though the cross is important, the cross is now empty.
Yes, the body of this man who was once that baby in a manger and as a man died on that cross was laid in a tomb, but the tomb is now empty for death could not contain him. He is risen from the dead and hold the keys of death and hades in his hand. Though the tomb is important, the tomb is now empty.
Yes, the man who was once a baby in that manger, and grew up only to be put to death by crucifixion on that cross, and was buried in that tomb that is now empty, has ascended into heaven and now sits on the right hand of God the Father. From that throne he will one day come again in judgement and make all things new.
The manger, the cross and the tomb are now empty.
Jesus Christ is Lord.