Proverbs 14:31
Whoever oppresses a poor man insults his Maker,
but he who is generous to the needy honors him.
God takes personally how we treat our neighbor. Here are other verses making the same point.
“So if you are offering your gift at the altar and there remember that your brother has something against you, leave your gift there before the altar and go. First be reconiled to your brother, and then come and ofer your gift” (Matthew 5:23-24).
“You shall love the Lord your God with all your heart and with all your soul and with all your mind. This is the great and first commandment. And a second is like it: You shall love your neighbor as yourself” (Matthew 22:37-39).
“And the King will answer them, ‘Truly, I say to you, as you did it to one of the least of these my brothers, you did it to me'” (Matthew 25:40).
“Likewise, husbands, live with your wives in an understanding way, showing honor to the woman as the weaker vessel, since they are heirs with you of the grace of life, so that your prayers may not be hindered” (1 Peter 3:7).
“If anyone says, ‘I love God,’ and hates his brother, he is a liar; for he who does not love his brother whom he has seen cannot love God whom he has not seen. And this commandment we have from him: whoever loves God must also love his brother” (1 John 4:19-21).