Complete my joy by being of the same mind, with the same love,
united in heart, thinking one thing.
Have in you the same attitude
that is also in Christ Jesus.
(Phil 2:2,5)
To have the mind and heart of Christ, the same attitude that is also in Christ Jesus . . . Saint Paul invites us to put on Christ. That means what happens in our baptism is real. Maybe that is what the old prayer tried to teach us:
O Sacred Heart of Jesus, make our hearts like unto yours.