I give and stop whenever I feel prompted to do it ... among others things I buy them the food, water; stop and talk to them; get to know their needs, if they need a ride to a shelter or if they need my cell to call a relative, etc.
I don't know why as JW I didn't help more ... I used to think they were all drunks, addicts, etc, and some are, but who am I to judge? It is ONLY for the grace of God that I am still standing!
Hebrews 13:2 Do not forget to entertain strangers, for by so doing some people have entertained angels without knowing it.
On the last day, Jesus will say to those on His right hand, "Come, enter the Kingdom. For I was hungry and you gave me food, I was thirsty and you gave me drink, I was sick and you visited me." Then Jesus will turn to those on His left hand and say, "Depart from me because I was hungry and you did not feed me, I was thirsty and you did not give me to drink, I was sick and you did not visit me." These will ask Him, "When did we see You hungry, or thirsty or sick and did not come to Your help?" And Jesus will answer them, "Whatever you neglected to do unto one of these least of these, you neglected to do unto Me!"
I think the Watchtower CORPORATION theaches that the "least of these" are their Board of Directors aka faithful slave ... , or something like that