In fact, none of these three is possible without human participation. Creation, after all, is neither finite nor complete. It was not a single event that happened long ago in history. As the liturgy reminds us, God renews the work of creation each new day. And as creative beings, as caretakers of earth, we, too, must commit to recreating the world and ourselves each new day.
Creation is a dynamic, constant process.
Redemption may be the easiest to recognize as a joint effort of humanity and God. During our Hebrew School service yesterday, one student commented that he thought praying was a waste of time because we're not supposed to ask God to do things for us, we should help ourselves. Another student responded that we pray to ask God for support so that we can do better at helping ourselves. God creates the possibility of redemption, teaches us our responsibility to work towards redemption and gives us the resources of body, mind and spirit we need. The rest is up to us.