The risen Jesus is the true shepherd, “the one who enters
through the gate, who walks in front of them, and the sheep follow
him because they recognize his voice.”
True Christians follow the true shepherd: they recognize his voice
and they obey his commands. They hear his message about loving
enemies, about seeking first the kingdom of God, about forgiving
seventy times a day.
They hear him talk of concern for the poor, of selling all that one
has, of being perfect as their heavenly Father is perfect. They
listen to him say that they should not worry about tomorrow, that
they should turn the other cheek, that they should lose their
lives.
They hear and obey, following their shepherd through the gate.
There are false shepherds who speak other words, who talk of
defending one’s rights, of accumulating wealth, of achieving
social prominence. Some Christians listen to them rather than to the
true shepherd.
Both the true and the false shepherds lead one to death. The
difference is that the true shepherd leads beyond death to
resurrection.
In Christ and through Christ God has revealed himself fully to mankind and has definitively drawn close to it; at the same time, in Christ and through Christ man has acquired full awareness of his dignity, of the heights to which he is raised, of the surpassing worth of his own humanity, and of the meaning of his existence.
Pope John Paul II, Redemptor Hominis, 1979:11