The Tao produced One; One produced Two; Two produced Three; Three produced All things
There is a strong connection between the Tao Te Ching and the I Ching. There is also a strong connection between the Tao Te Ching and the Bhagavad Gita. This quote above is very difficult to understand, everyone has a different interpretation of it.
Many people think that the Tao produced the Tao. But, by reflecting on the chapter one of the Tao Te Ching we can see something different.
(Conceived of as) having no name, it is the Originator of heaven and earth; (conceived of as) having a name, it is the Mother of all things.
If we consider the Tao as God (formless God), then God produces the Word who is the One of Laozi. The Word is the originator of heaven and earth. So One, The Word of God (the same Word that is mentioned in the Bible) has created Two (heaven and earth), which are naturally the Yin and the Yang. Then Two have created Three. The Three have been very difficult to grasp. This is where Anandamayi helps us:
Ma was asked which the three languages were and she replied, "Try and understand; first of all there were three, then they became many; like sattvas, rajas and tamas; Brahma, Vishnu, Shiva. From vasana arises creation (sristi), in vasana is maintenance (shtiti) and from karma arises destruction (laya). The exhaustion of vasanas is laya. As you first take one letter, then break up one to form three; from three you get many. Then again to get back to one you break the many and get to three, break three and reach one.
Sri Sri Ma Anandamayi, by Sri Gurupriya Devi, tr. by Tara Kini, page 222
So the Three are Brahma, Vishnu and Shiva who represent Creation, Maintenance and Destruction.
One loses confidence, then sees a group of three passing by. If one approaches them then what one hoped for will be obtained.