Jesus shows here that kindness and neighbourliness is not based on the geographical origin of the needy. Neighbourliness is based on the character of the helper. He did the neighbourly thing and gained a neighbour. The remarkable thing about this circumstance is that it rivals the extreme racial hatred shown to blacks, post emancipation. The late Dr. Martin Luther King Jr. showed his persecutors love and gained his enemies as friends.
Love is the base.
A servant's attitude is the key to carrying it off. Again, we address the issue of selfishness. It is hard to avoid, but we live in a me-first , take care of number one, I am the greatest, kick you in the gut, stab you in the back type of world. Even when notable charities are supported, they obtain support based on the positive publicity a high profile contributor may obtain as a result. Yet many need a servant.