"The generous man will be prosperous,
And he who waters will himself be watered."
There is a principle that exists for Christians that should encourage us to be generous. That is, when we open ourselves up to bless others, we ourselves are blessed. If we have the gift of teaching and we endeavor to teach others from God's word, we find we are the ones who learn and grow the most. When we offer hospitality to others, our spirits are refreshed. If we willingly give from our bank accounts, God will replenish what we have given and often give us more. I have seen this played out in my own life and the lives of other Christians countless times. It's just impossible to out give the Lord.