While it is true that the Assumption of the Blessed Virgin Mary is not an event relayed by Scripture, there are Scriptural passages that convey the essence of the Mystery, the meaning of the Mystery (with my comments in italics) ...
For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord. (Rom. 6:23) - Thus without sin, it would seem there is no death.
Because you will not abandon me to the realm of the dead, nor will you let your faithful one see decay. (Ps. 16:10) - There are many "incorruptibles" in the Church - bodies of saints that inexplicably do not decay.
But Christ has indeed been raised from the dead, the firstfruits of those who have fallen asleep. (1 Cor. 15:10) - "Firstfruits" means He leads the way; others follow.
What Mary's Assumption shows us is the way to follow the Way. She is the one thing Jesus cannot be - the perfect disciple of Jesus. Follow Mary, who follows Jesus, into heaven.
And Mary might well say what St. Paul says ...
Be imitators of me, as I am of Christ. (1 Cor. 11:1)
Let us pray a decade of the Rosary, meditating upon the Assumption of Mary, and the glorious culmination that it promises those who, like her, follow Him.
And let us pray ...
To you, Immaculate Heart of Mary, we consecrate ourselves – our hearts, minds, wills and lives and all those works we undertake so they may be for the glory of God, for the sake of the Gospel and the salvation of souls. Holy Mother, our Queen and our Joy, give to our hearts the dimensions of yours and form us in the image of your beloved Son.