Jesus speaks of the love which the Father and he have for those who belong to him. We can never outgive God in love, because he has loved us without measure. Our love for him is a response to his exceeding mercy and kindness towards us. In God's love we find the fulness of grace, life, peace, and joy. We are to love others as Jesus has loved us.
True love is sacrificial.
It gives all to the beloved. And there is no greater proof in love than the sacrifice of one's life for the sake of another. Jesus proved his love for his disciples by giving his life for them, even to death on the cross. We prove our love for God and for one another when we embrace the way of the cross. When my will crosses with God's will, then God's will must be done.