Does: he showed his benevolence by children in need, make sense? ?

Yes, it does. Although benevolence can also be used as an adjective, you can show your benevolence, and in that case, it will be like a noun.

Hope this helps :)

Dr.king , i would take my mental flight by egypt and i would watch god’s children in their magnificent trek from the dark dungeons of egypt through, or rather across the red sea, through the wilderness on toward the promised land.his  speech"i  have a dream" to encourage people that change will come. this  speech  was very important during the civil rights movement and was a contributing factor in the end of racial injustice in society. the  intended audience  of "i  have a dream" is white people. i hope this