Deuteronomy 12-21
...walk after the LORD your God and fear Him, and keep His commandments and obey His voice; you shall serve Him and hold fast to Him... that the Lord might show you mercy, and have compassion on you...because you have listened to the voice of the Lord your God.. and do what is right in the eyes of the Lord your God. You shall truly tithe year by year... and may the Lord bless you in all the work of your hand which you do... You shall open your hand wide to him (who is in need) and willingly lend him sufficient for his need.