Without love we may increase the externals of religion but not spirituality. Without love we may impress others with the financial growth in tithes and offerings, but not win men to Christ. But to love as Christ loved is quite beyond our power and ability to perform.
Love comes from being loved.
Christ's love for us is the source of our love. To the degree that we believe the love God has for us and let Him truly love us, to that degree we have the capacity to love others. For the natural, unconverted man, the best he can do is to love the lovable. He cannot love the depraved, the emotionally sick, the unlikable personality. This is quite beyond his powers.