All of Kabbalah speaks about light and containers – you see, if we think about it as hardware and software, we sort of get reality- for after all what is a person- the body is hardware but the mind, the emotions, hence the thoughts, speech, and actions (their executable functions) software – so hence in simple words: in the beginning there was nothing – the infinite being of no shape or form desired to bestow his love – so he created hardware – a universe – trees, oceans, plants, birds etc. and then he created a body and he breathed into the body the software, the ability to think, to speak – and he said, before you is an entire world, if you will follow my advice you will be blessed – and this always has and always will be true