John Paul II presents charity as the inseparable love of God and neighbour, rooted in the Trinity: received from the Father, revealed by the Son, and poured into believers through the Holy Spirit. Scripture broadens the commandment from love of fellow Israelites to love of strangers and enemies, imitating the Father’s impartial mercy. Together, love of God and neighbour form the foundation of the moral law and the path toward the kingdom of God. As the primary fruit of the Holy Spirit, charity gives rise to joy, peace, kindness, and every other virtue. It surpasses faith and hope because it endures eternally, and Christ’s self-giving sacrifice defines its “new commandment.” Love for Jesus becomes visible in practical service to neighbours, especially in responding to their needs; hatred of another is incompatible with communion with God.