Similarly, at the sixth ecumenical council, Constantinople III in 681, the Church confessed that Christ possesses two wills and two natural operations, divine and human. They are not opposed to each other, but co-operate in such a way that the Word made flesh willed humanly in obedience to his Father all that he had decided divinely with the Father and the Holy Spirit for our salvation. Christ’s human will “does not resist or oppose but rather submits to his divine and almighty will.”
Since the Word became flesh in assuming a true humanity, Christ’s body was finite. Therefore the human face of Jesus can be portrayed; at the seventh ecumenical council (Nicaea II in 787) the Church recognized its representation in holy images to be legitimate.
At the same time the Church has always acknowledged that in the body of Jesus “we see our God made visible and so are caught up in love of the God we cannot see.” The individual characteristics of Christ’s body express the divine person of God’s Son. He has made the features of his human body his own, to the point that they can be venerated when portrayed in a holy image, for the believer “who venerates the icon is venerating in it the person of the one depicted”.
Jesus knew and loved us each and all during his life, his agony and his Passion, and gave himself up for each one of us: “The Son of God. . . loved me and gave himself for me.” He has loved us all with a human heart. For this reason, the Sacred Heart of Jesus, pierced by our sins and for our salvation,”is quite rightly considered the chief sign and symbol of that. . . love with which the divine Redeemer continually loves the eternal Father and all human beings” without exception.
From the Catechism of the Catholic Church 475-478