Would Jesus have had a soul?

1. Jesus, God the Son has a true human soul.
2. In uniting a human soul to Himself, His divine nature doesn’t change. He doesn’t cease to be God, or become a half-man, half-God demigod or something. Even while becoming fully man, He remains fully God.
3. We’re not talking about a pre-existing human soul. There was a heresy called adoptionism that said that Jesus the man eventually became united with Christ, the Second Person of the Trinity. That’s wrong. Christ’s human soul is created, but (like His Body) His soul is united to Him from the first moment of its existence.

CATECHISM OF CATHOLIC CHURCH

IV. HOW IS THE SON OF GOD MAN?

470 Because "human nature was assumed, not absorbed",

in the mysterious union of the Incarnation, the Church was led over the course of centuries to confess the full reality of Christ's human soul, with its operations of intellect and will, and of his human body. In parallel fashion, she had to recall on each occasion that Christ's human nature belongs, as his own, to the divine person of the Son of God, who assumed it. Everything that Christ is and does in this nature derives from "one of the Trinity". The Son of God therefore communicates to his humanity his own personal mode of existence in the Trinity. In his soul as in his body, Christ thus expresses humanly the divine ways of the Trinity:

The Son of God. . . worked with human hands; he thought with a human mind. He acted with a human will, and with a human heart he loved. Born of the Virgin Mary, he has truly been made one of us, like to us in all things except sin.99

Christ's soul and his human knowledge

471 Apollinarius of Laodicaea asserted that in Christ the divine Word had replaced the soul or spirit. Against this error the Church confessed that the eternal Son also assumed a rational, human soul.

472 This human soul that the Son of God assumed is endowed with a true human knowledge. As such, this knowledge could not in itself be unlimited: it was exercised in the historical conditions of his existence in space and time. This is why the Son of God could, when he became man, "increase in wisdom and in stature, and in favor with God and man",and would even have to inquire for himself about what one in the human condition can learn only from experience.This corresponded to the reality of his voluntary emptying of himself, taking "the form of a slave".

473 But at the same time, this truly human knowledge of God's Son expressed the divine life of his person.

"The human nature of God's Son, not by itself but by its union with the Word, knew and showed forth in itself everything that pertains to God."Such is first of all the case with the intimate and immediate knowledge that the Son of God made man has of his Father.106The Son in his human knowledge also showed the divine penetration he had into the secret thoughts of human hearts.

474 By its union to the divine wisdom in the person of the Word incarnate, Christ enjoyed in his human knowledge the fullness of understanding of the eternal plans he had come to reveal.What he admitted to not knowing in this area, he elsewhere declared himself not sent to reveal.

Catechism of the Catholic Church

Did Jesus Have a Human Soul?