Now, in this planet we have got this body which is where earth is very prominent. Similarly, in other planets, other planets, somewhere water is very prominent, somewhere fire is very prominent. In the sun planet, the bodies there . . . there are also living entities, but their body is so made that it is fiery. They can exist in the fire. They can exist in the fire. Similarly, Varuṇaloka, in the Venus, all these planets, they have got different types of body. Just like here you can experience that in the water the aquatics, they have got a different type of body. For years and years together there are aquatic animals, they are within the water. They are very comfortable. But the moment you'll drag it to the land, it dies.
Similarly, you are very comfortable on the land, but the moment you are put into the water, you die. Because your body, bodily construction is different: his body, the bodily construction different: the bird's bodily . . . the bird, heavy bird, it can fly, but, God's made flying instrument. But your man-made instrument, it crashes. Crashes. You see? Because artificial.
So this is the arrangement. Every living being has got a particular type of body. Dehino 'smin yathā dehe. And what is the nature of that body? Now, here the matter is being explained that how we change our body, how . . . but, but, but, because that is a difficult problem for us, because we are engrossed with the idea of identifying this body with the soul. Now, the first A-B-C-D of spiritual knowledge is to understand that, "I am not this body." Unless one is firmly convinced that, "I am not this body," he cannot make progress in the spiritual line. So the first lesson in the Bhagavad-gītā is taken in that way. So here it is, that dehino 'smin. Now, dehī, the soul, soul. Dehī means soul. One who has accepted this body, material body, he's called dehī. So asmin, he is there. He is there, but his body is changing. The body is changing.
Now, our body was formed in the womb of my mother. That is also described in the Śrīmad-Bhāgavata, the physiology, physiology of this body. It is said there that according to our karma we are put through the semina of the father, injected into the womb of the mother. And the father's secretion and the mother's secretion, that is emulsified and takes the form of a pea, and that pea gradually develops. In three months, there are holes, nine holes: the eyes, ears, nose and the . . . just like we have got nine holes. And in seven months the whole body is complete. Then the child gets consciousness. And ten months it is just ready to come out.
So by air, the same air, forces the child to come out of the mother's connection. Because so long a child remains within the womb of the mother, she, she takes through the mother, so there is intestinal connection between the child and the mother. So after the child comes out, the intestinal connection is cut away and he becomes a separate identity. That is the law.
Now, the . . . our point is, as from the mother's womb, from the very beginning of our birth as the body develops, develops, similarly, after coming out of the body, it also develops. But the spirit spark is there, the same—the body takes development. So . . . now, that development—from this small child, he becomes a bigger child, then he becomes a boy, then becomes a youth, then gradually a old man like me. And then gradually, when this body is no longer useful, then it is . . . it has to be given up and another body has to be taken—this is the process of transmigration of soul. I think there is no difficulty to understand this simple process.