When you reap the harvest of your land, you shall not reap to the very edges of your field, nor shall you gather the gleanings of your harvest. You shall not strip your vineyard bare, or gather the fallen grapes of your vineyard; you shall leave them for the poor and the alien: I am the LORD your God. (Leviticus 19: 9-10)
He who despises his neighbor sins, but happy is he who is gracious to the poor. (Proverbs 14:21)
"Feed the hungry! Help those in trouble! Then your light will shine out from the darkness, and the darkness around you shall be as bright as day. And the Lord will guide you continually, and satisfy you with all good things, and keep you healthy too; and you will be like a well-watered garden, like an ever-flowing spring. (Isaiah 58:10-11)
And the crowds asked [John the Baptist], "What then should we do?" In reply he said to them, "Whoever has two coats must share with anyone who has none; and whoever has food must do likewise." (Luke 3:10-11)
But whoever has the world's goods, and beholds his brother in need and closes his heart against him, how does the love of God abide in him? (1 John 3:17)
He who gives to the poor will never want, but he who shuts his eyes will have many curses. (Proverbs 28:27)
And the king of all biblical quotes regarding the poor(because it quotes Jesus directly):
The Sheep and the Goats / Matthew 25:31-46
31 “When the Son of Man comes in his glory, and all the angels with him, he will sit on his glorious throne. 32 All the nations will be gathered before him, and he will separate the people one from another as a shepherd separates the sheep from the goats. 33 He will put the sheep on his right and the goats on his left.
34 “Then the King will say to those on his right, ‘Come, you who are blessed by my Father; take your inheritance, the kingdom prepared for you since the creation of the world. 35 For I was hungry and you gave me something to eat, I was thirsty and you gave me something to drink, I was a stranger and you invited me in, 36 I needed clothes and you clothed me, I was sick and you looked after me, I was in prison and you came to visit me.’
37 “Then the righteous will answer him, ‘Lord, when did we see you hungry and feed you, or thirsty and give you something to drink? 38 When did we see you a stranger and invite you in, or needing clothes and clothe you? 39 When did we see you sick or in prison and go to visit you?’
40 “The King will reply, ‘Truly I tell you, whatever you did for one of the least of these brothers and sisters of mine, you did for me.’
41 “Then he will say to those on his left, ‘Depart from me, you who are cursed, into the eternal fire prepared for the devil and his angels. 42 For I was hungry and you gave me nothing to eat, I was thirsty and you gave me nothing to drink, 43 I was a stranger and you did not invite me in, I needed clothes and you did not clothe me, I was sick and in prison and you did not look after me.’
44 “They also will answer, ‘Lord, when did we see you hungry or thirsty or a stranger or needing clothes or sick or in prison, and did not help you?’
45 “He will reply, ‘Truly I tell you, whatever you did not do for one of the least of these, you did not do for me.’
46 “Then they will go away to eternal punishment, but the righteous to eternal life.”
(Matthew 25:31-46)
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