The story of Creation is an allegory. God has no need to rest. There is nothing that could make an infinite God tired, and no work that is any effort whatsoever.
Is it now? Has this always been the position of the Church 
There is no contradiction in that, unless you place limitations on God, and that would be a contradiction
We certainly cannot place a limit on god the infinite, boundless, absolute. But we certainly can place limits on what humans have had to say about god. Humans are finite beings with finite minds and finite language. Whatever they have to say about god is going to be limited and prone to error.
Your statements are thus open to logical scurtiny
- In the beginning there is god and nothing else
- Then god creates the material universe
If statement 1 is correct then it means in the beginning there is god and nothing else. Then for statement 2 to be correct as well, god must have have created the material universe out of something. However, as in the beginning there is only god and nothing else, there is nothing to create from, other than from god himself. Nothing can only produce nothing. Therefore the only logical conclusion is god created the material universe of himself.
This is known as emanationism and is the only creationist doctrine that makes rational sense and produces no contradictions. Hindus are emanationists.
Creation emanates from the source that is pure spirit. In the evolution phase of creation. First there is first divine will(in the beginning divine will arose) and then it is thought and then it becomes physical matter. In the involution phase of the creation. Physical matter will revert to thought and thought will revert to divine will. This completes one cycle of creation.
This same cycle of evolution and involution can be seen taking place all over. When you go to sleep you revert to thought and dream and then revert to desire. When you meditate you revert from the physical body and senses into the thoughts in the mind and then to desires that produce all thoughts.
All matter also begins similarly. It is first desire, then thought and then physical matter. Evolving from minute to massive. In psychosomatic manifestations in the body first there is desire then there are thoughts and then thoughts materialise as physical manifestations in the body.
The same happens with creativity. First there is desire, then there is thought and then thought is turned into action and materialised.
It is widely known fact in physics that matter does not begin as massive initially. It first begins as a wave of possibility in the quantum field and then materialises gradually from atomic, molecular to celluar. This manifestation begins at the level of consciousness.
Therefore the soul exists prior to the manifestation of body. It does not come into existence with the body. It precedes the body. Only then is it possible for the soul to survive after the death of the body.