The Big Bang did not create the universe. The universe existed before the big bang. But it was all in one place at one moment in time.
The Big Bang created distance both in space and time.
Perhaps gravity existed before the Big Bang and held everything together in one place and moment in time.
Perhaps gravity is working to bring space and time back to its state prior to the Big Bang and only incidentally draws particles together.
Perhaps gravity stops time breaking up into incohesive moments (particles of time). If it does then this could explain why gravity appears to us to be such a weak force. We are only taking into account its effect on matter and energy.
Perhaps the universe before the Big Bang was a thought in the mind of God that expanded into a fully fledged idea.
Perhaps the universe, composed of waves, is, in its entirety, a divine brainwave.