And before the throne there was a sea of glass like unto crystal: and in the midst of the throne, and round about the throne, were four living creatures full of eyes in front and behind.
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glass: Because of our faith in the true baptism, this is compared to glass, in which nothing else appears on the outside than that which it has within. The grace of baptism is also represented by crystal, which is formed from water, congealed into a precious stone.
A sea of glass, like crystal, calm and transparent, and may signify that the saints had passed a boisterous sea of troubles in this world, which is now changed into everlasting tranquillity.
Four living creatures, or animals. Alcazar (p. 364) takes notice of thirty different expositions of these animals. He understands the apostles, bishops, and preachers of the Christian faith: others, four of the chief Angels or celestial spirits. Several others expound them of the four evangelists: yet this was before St. John himself had written his gospel. (Witham)
The extensive sea of glass, here described transparent as crystal, represents what may be called the floor of heaven. Before the throne and round it stand four living creatures, of an extraordinary shape, which denote the four great prophets, Isaias, Jeremias, Ezechiel, and Daniel. Their bodies are described full of eyes, both before and behind, an emblem of their prophetic sight, that penetrates into all ages past, present, and to co...
That is the gift of baptism which He sheds forth through His Son in time of repentance, before He executes judgment. It is therefore before the throne, that is, the judgment. And when he says a sea of glass like to crystal, he shows that it is pure water, smooth, not agitated by the wind, not flowing down as on a slope, but given to be immoveable as the house of God. ...