The things of earth are owned by God and we are simply stewards. This will inform how we use and share those things with which God has entrusted to our care. Sharing is, again, also more than simply about things. Sharing for some might be taking the effort to teach a sixth grade Sunday School class and sharing in the burden of the work in the church, and also sharing the talent that God has given to you. Sharing might mean watching someone's kids so they can go out and share the gifts God has given them.
Sharing really is more than about things.
May God give us the grace to learn to share our possessions, time, talents, and wisdom graciously and joyously, even as Christ has so fully shared His forgiveness with us.