As thy days, so shall thy strength be.@Deuteronomy 33:25
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Johann A. Freylinghausen (1670–1739)

Fran­ces R. Hav­er­gal, Jan­u­ary 1, 1859. Ap­peared in the Sun­day Mag­a­zine, Ju­ly 1867.

Gott Sei Dank, Neu­es Geist­reich­es Ge­sang­buch, by Jo­hann A. Frey­ling­hau­sen (Hal­le, Ger­ma­ny: 1704) (🔊 pdf nwc).

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Frances R. Havergal (1836–1879)

The New Year’s Bells were ring­ing in St. Nic­ho­las’ Church close to our Rec­to­ry (Wor­ces­ter). I was sleep­ing with my sis­ter Ma­ria; she roused me to hear them and quot­ed the text As thy days thy strength shall be, as a New Year’s Mot­to. I did not an­swer, but pre­sent­ly re­turned it to her in rhyme (the two first vers­es, I think). She was pleased, so I fi­nished it the next day and gave it to her. The last verse, with a slight al­ter­a­tion, was placed by my cou­sins on Aunt Iz­ard’s tomb­stone, 1868.

The Hav­er­gal Man­u­scripts
Julian, p. 85.

As thy days thy strength shall be!
This should be enough for thee,
He who knows thy frame will spare
Burdens more than thou canst bear.

When thy days are veiled in night,
Christ shall give thee heavenly light;
Seem they wearisome and long,
Yet in Him thou shalt be strong.

Cold and wintry though they prove,
Thine, the sunshine of His love;
Or, with fervid heat oppressed,
In His shadow thou shalt rest.

When thy days on earth are past,
Christ shall call thee home at last,
His redeeming love to praise,
Who hath strengthened all thy days.