numeric scrambled word

A Message From Above

Each number in a shaded cell represents a specific letter.
Red cells: 1-A, 2-B, 3-C, 4-D, 5-E, 6-F, 7-G, 8-H, 9-I, 0-J.
Green cells: 1-K, 2-L, 3-M, 4-N, 5-O, 6-P, 7-Q, 8-R, 9-S, 0-T.
Blue cells: 1-U, 2-V, 3-W, 4-X, 5-Y, 6-Z.
Unscramble the letters to form a seven-word phrase from a passage regarding Christ's birth.