Westminster Shorter Catechism

Q22

How did Christ, being the Son of God, become man?

Christ, the Son of God, became man, by taking to himself a true body, and a reasonable soul59, being conceived by the power of the Holy Ghost, in the womb of the virgin Mary, and born of her60, yet without sin61.
Doctrine
Ch. VIII Of Christ the Mediator

Scripture Proofs

59
Philippians 2:7Hebrews 2:14Hebrews 2:17
60
Luke 1:27Luke 1:31Luke 1:35
61
2 Corinthians 5:21Hebrews 4:15Hebrews 7:261 John 3:5