the Father and Agency

Heavenly Father stood up for our right to agency, and because of it lost a third of his children to Satan knowing even then that he stood for the right of that one third also. In this life we have 2 things; one of which we have completely, the other we have a very limited supply of. Agency, and Time. So after everything he's given us would it not be appropriate to give those very things back to him by doing our best to bring his other children back to Him?