In plain words
So the nature of karma is bound up with the body and is not opposed to it. All the deeds done with the body must be good deeds. It is by the fruit of these deeds that our births go on multiplying. When it comes to evil deeds, you may delude yourself: ‘I am doing just one; I have not done many, have I!’ In truth, one evil deed is enough. Any number may grow from it. Sow one thorn seed and it grows into a big tree. Within that tree come many thousands of seeds. Through these many seeds, many trees grow again. In the same way, plant a fruit seed and it turns into a big tree, and fruit seeds grow in it in plenty. And from them fruit trees grow again. ‘Ekoham bahu syām.’ The One has been taking shape as the many. That all the trees that came to be many arose from a single seed: this principle Kṛṣṇa declared in the Bhagavad Gītā as ‘Bījaṃ māṃ sarvabhūtānām’. ‘In the heart of everyone I am present in the form of a seed. That is, I am present in the cosmic form,’ He declared. So we must try to recognise this truth. God Himself is a seed. The world that has emerged from God is the big tree. In this great tree of the world, each country is a branch. On each branch the fruits that are human lives have grown in great number. In each fruit that is a human being dwells an Ātma. The one God has taken on many forms. Some great souls see the whole world as one, with the vision of the Ātma. Others see it as divided, with the vision of the body, and fall into many tangles. So every human being who has taken a body must try to recognise the nature of the body.
The body is of the five elements; the body must fall, sooner or later; the indweller is free from all ills; reckon it well: for the indweller, death and birth, the seals of delusion’s bonds and fetters, there are none, if you see the truth; that indweller is the God of gods; reckon it in your mind: He is the Ātma itself.