Then, in the resurrection of Christ, His crucified humanity was made alive by the Spirit of His divinity and was uplifted into the sonship of the only begotten Son of God. For example, a grain of wheat falls into the ground and dies. That death causes the shell of the grain to be broken and destroyed, yet at the same time, the life within the grain is made active. The outward shell is broken and dies, but the life within is activated and begins to germinate and grow. This germination, this growth, is resurrection. In Hymns, #482 the first two lines of stanza 1 say, "I am crucified with Christ,/And the cross hath set me free"; then the first two lines of stanza 3 say, "This the secret nature hideth,/Harvest grows from buried grain." When a grain of wheat is buried in the ground, is it dying or living? If the grain of wheat were merely dying, no farmer would want to sow any grain. Everyone who sows knows that although a grain dies alone when it is sown, it brings forth thirty grains, sixty grains, and even a hundred grains.
John 12:24 says, "Unless the grain of wheat falls into the ground and dies, it abides alone; but if it dies, it bears much fruit." To bear much fruit is to be made alive, and this takes place at the time of dying. The grain of wheat, on the one hand, is dying, but on the other hand, is being made alive. The same is true with Christ when He was on the cross. Although His humanity, His flesh, as His outer shell, was crucified on the cross, the Spirit as the essence of His divinity was greatly activated so that His crucified humanity might be made alive in resurrection. Not only so, when His humanity was made alive, it was uplifted into the sonship of the only begotten Son of God. In other words, as soon as He was resurrected, His humanity was uplifted into the divine sonship. Thus, He was begotten to be the firstborn Son of God.