“Mary’s special participation with Christ in the resurrection and glorification of the body is guaranteed by a series of theological factors, based either directly or indirectly on her divine motherhood. Their meaning can be strengthened still further by the application of various general principles premised by the Sacred Scriptures:
1. In the Mother of God, precisely because she is such only through and in her body, a permanent separation of body and soul is unthinkable, just as in Christ the separation of His body and soul from His divinity would be inconceivable on account of the hypostatic union.
2. Mary’s quality as motherly bride of Christ requires a permanent and complete unity of life which could be dissolved only temporarily in view of the ends of that union. To this the teaching of St. Paul must be applied concerning the love of a man for his wife as his flesh, which was ideally realized in Christ’s love for His Church; and this the more so since Mary, in a singular way, is the flesh of Christ and the principal member of His Church. Accordingly, the power of Christ’s love for His Church had to be revealed in Mary in a specific and complete manner.
3. To this can be added the principles of the Sacred Scriptures concerning the honor due to father and mother, and also concerning the participation in Christ’s glory, promised to those who share in His sufferings and death. The honor of the mother requires the complete safeguarding of her entire existence. The material service performed by Mary, whereby she used the substance of her body for the formation and sustenance of Christ, demands the glorification of her body in a distinctive manner. Furthermore, Mary’s singular, intimate, and absolute union with Christ in His sufferings and death requires the perfect participation with Him in His life of glory.
4. As instrument and cooperator in the work of redemption, Mary must most perfectly experience in herself the fruits of that sublime work; and this fruit so much the more, since only in a risen and glorified body could she, in union with Christ, effectively continue her office as mediatrix, and be the perfect surety of the efficacy of the act of redemption for the rest of mankind. In this respect it may be said that, without Mary’s resurrection and glorification, there would have been not only a weakening of that union with Christ, in virtue of which as the new Eve, she belongs at the side of the heavenly Adam for the complete possession of life, but the guaranty for our redemption would also be lacking precisely where, apart from Christ, the evidence of the efficacy of redemption should be most sought and expected. Moreover, in the economy of redemption, the peculiar type of the indefectibility and eternal vitality of the Church would be lacking.”
-Matthias Joseph Scheeben, Mariology, vol. 2.