Here is something shared by a Buddhist friend of mine:

One day, Ananda, Buddha's attendant, exclaimed that kalayanamita (true friends who encouraged, supported and helped one another) were very important. The Buddha replied "Ananda, kalayanamita is everything in the holy life".

I know a man who once said something similar: "Greater love has no one than the man who would lay down his life for his friends". His name was Jesus. He was the Son of God.