The full meaning of that heat and strength can hardly be known in northern lands. Their hottest summer day’s heat is as nothing, compared with the scorching blaze and glare of the Sun in countries nearer to the equator--for instance, in that country where the Psalm was written. Through all the ages of our world’s history, from the very beginning, the radiant Sun has risen and set, day after day. Morning after morning he has come up from beyond the horizon on one side; evening after evening he has vanished below the horizon on the other side. Year after year, and century after century, still “like a strong man” he runs his daily race, and warms and lights each side of the world in turn. Now about the Sky at night. What happens when the Sun is gone? The bright blue of the sky grows fainter and more dull, and stars begin to show themselves. First, one little twinkle is seen; then another little twinkle; then a third; till, if it be a clear evening, the whole sky is dotted with gleaming points. Some are more bright, some are less bright. Here one flashes like a diamond, with different colors; there another is so dim as hardly to be seen at all. It may be that we have caught sight of the Moon before the Sun has set--should she happen to be in a right place in the sky, not too near to the Sun. While he is up, if we get a glimpse of her at all, she looks like a mere pale patch of whiteness. But when the Sun is gone, and darkness deepens, she changes fast; and soon she is lighted up with a soft silvery glow, sending her beams to the Earth. Now, you all know--everybody knows--that the Sun rises each morning, crosses the sky, and sets each evening. But perhaps not every boy and girl knows quite so clearly that the Moon and the Stars behave very much in the same manner. They too, either in the day or in the night, rise and cross the sky and set; and at night we may see them do it. We cannot always watch the rising and setting of the Moon: for when she rises in the day-time her soft beams are often lost in the glare of sunlight. Still she is always there, in the sky: always rising and setting to _some_ part of our Earth. When we say, as we often do, “Is there a moon to-night?” we mean, “Is the moon where we can see her to-night?” There is always a Moon, and there is always the same Moon. As to the Stars, their movements are puzzling, no doubt. No two stars rise at the same point or take just the same path over the sky, or set on the same spot. Some rise exactly east, and set exactly west. Some rise in the south-east and set in the south-west. Some rise in the north-east, and set in the north-west. No star is ever seen, however, to rise anywhere towards the _west_, and to travel backwards towards the _east_. All the stars in company move as a whole _from the eastern side of the world towards the western side of the world_. That is to say, they seem to move thus.