Living in a big city can definitely make you want to wall yourself in. We like to live in secluded areas and guarded communities. Do you know your neighbors 3 doors from either side of your home by name? The Bible challenges us to go even much further.
Be hospitable to one another without grumbling. As each one has received a gift, minister it to on another, as good stewards of the manifold grace of God. 1 Peter 4:9-10 (NKJV)
If a brother or sister is naked and destitute of daily food, and one of you says to them, "Depart in peace, be warmed and filled," but you do not give them the things which are needed for the body, what does it profit? James 2:15-16 (NKJV)
"For whoever gives you a cup of water to drink in My name, because you belong to Christ, assuredly, I say to you, he will by no means lose his reward. Mark 9:41 (NKJV)
"I have shown you in every way, by laboring like this, that you must support the weak. And remember the words of the Lord Jesus, that He said, 'It is more blessed to give than to receive.' " Acts 20:35 (NKJV)
But whoever has this world's goods, and sees his brother in need, and shuts up his heart from him, how does the love of God abide in him? 1 John 3:17 (NKJV)
Distributing to the needs of the saints, given to hospitality. Romans 12:13 (NKJV)
For I do not mean that others should be eased and you burdened; but by an equality, that now at this time your abundance may supply their lack, that their abundance also may supply your lack--that there may be equality. 2 Corinthians 8:13-14 (NKJV)
'For I was hungry and you gave Me food; I was thirsty and you gave Me drink; I was a stranger and you took Me in; 'I was naked and you clothed Me; I was sick and you visited Me; I was in prison and you came to Me.' Matthew 25:35-36 (NKJV)
"And the King will answer and say to them, 'Assuredly, I say to you, inasmuch as you did it to one of the least of these My brethren, you did it to Me.' Matthew 25:40 (NKJV)
Do not forget to entertain strangers, for by so doing some have unwittingly entertained angels. Hebrews 13:2 (NKJV)