The King James Bible addresses generosity in several passages:
2 Corinthians 9:6-7 (KJV)
6 But this I say, He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully. 7 Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver.
Proverbs 11:24-25 (KJV)
24 There is that scattereth, and yet increaseth; and there is that withholdeth more than is meet, but it tendeth to poverty. 25 The liberal soul shall be made fat: and he that watereth shall be watered also himself.
Luke 6:38 (KJV)
38 Give, and it shall be given unto you; good measure, pressed down, and shaken together, and running over, shall men give into your bosom. For with the same measure that ye mete withal it shall be measured to you again.
Acts 20:35 (KJV)
35 I have shewed you all things, how that so labouring ye ought to support the weak, and to remember the words of the Lord Jesus, how he said, It is more blessed to give than to receive.
Proverbs 22:9 (KJV)
9 He that hath a bountiful eye shall be blessed; for he giveth of his bread to the poor.