It means the Lord loveth a cheerful giver, and that when you help others, your heart fills with compassion for the less fortunate, and brings you closer to God by appreciating His goodness and the blessings of the good people in your own life.Good fortune shared doubles the blessing.
A stocking.
emptied
Carrying a heavy purse can bring happiness and ease to one's heart.
water , glove
If a feeding tube is inserted to feed the person and they are kept on a ventilator a person can live indefinitely. If the heart is not beating and the lungs not being filled with air death will occur in minutes.
A glove or a sock is an item that can only be filled and emptied by hand.
Atriums
The sound is caused by the closing of valves in the heart.
Opposites could be full, or filled.For metaphorically empty (hollow), the opposite could be meaningful.For empty, specifically of people, the opposite could be populated, or occupied.the oppisite of empty is full
its big
A capacitor is to electricity as a glass is to water. Both are passive devices, they can be filled and they can be emptied.