Serving others and giving back is biblical because it is a reflection of God's love and compassion towards humanity. In the Bible, Jesus teaches his disciples to love their neighbors as themselves and to serve others with humility and kindness.
In Matthew 25:35-40, Jesus says, "For I was hungry and you gave me something to eat, I was thirsty and you gave me something to drink, I was a stranger and you invited me in, I needed clothes and you clothed me, I was sick and you looked after me, I was in prison and you came to visit me."
Furthermore, in James 2:14-17, it states, "What good is it, my brothers and sisters, if someone claims to have faith but has no deeds? Can such faith save them? Suppose a brother or a sister is without clothes and daily food. If one of you says to them, 'Go in peace; keep warm and well fed,' but does nothing about their physical needs, what good is it? In the same way, faith by itself, if it is not accompanied by action, is dead."
Therefore, serving others and giving back is not only a reflection of our faith and love for God but also a way to show our gratitude for all the blessings we have received. It is a way to share God's love and kindness with others and to make a positive impact in the world.