You will keep in perfect peace him whose mind is steadfast, because he trusts in You.@Isaiah 26:3
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Edward H. Bickersteth, Jr. (1825–1906)

Ed­ward H. Bick­er­steth, Jr., 1875. Bick­er­steth was va­ca­tion­ing in Har­ro­gate, Eng­land, where he heard a ser­mon on Isai­ah 26:3 by Can­on Gib­bon. The min­is­ter re­lat­ed that the He­brew text used the word peace twice to indicate ab­so­lute per­fect­ion. The idea was still on Bick­er­steth’s mind when he vis­it­ed a dy­ing rel­a­tive that af­ter­noon. To soothe the man’s emo­tion­al tur­moil, Bick­er­steth opened his Bi­ble to read from Isai­ah 26:3. He wrote down these ly­rics, just as they ap­pear today, and read them to the man: per­haps the last thing he heard before Je­sus called him to Hea­ven’s per­fect peace.

Pax Te­cum George T. Cald­beck & Charles J. Vin­cent, 1876 (🔊 pdf nwc).

Peace, perfect peace, in this dark world of sin?
The blood of Jesus whispers peace within.

Peace, perfect peace, by thronging duties pressed?
To do the will of Jesus, this is rest.

Peace, perfect peace, with sorrows surging round?
On Jesus’ bosom naught but calm is found.

Peace, perfect peace, with loved ones far away?
In Jesus’ keeping we are safe, and they.

Peace, perfect peace, our future all unknown?
Jesus we know, and He is on the throne.

Peace, perfect peace, death shadowing us and ours?
Jesus has vanquished death and all its powers.

It is enough: earth’s struggles soon shall cease,
And Jesus call us to Heaven’s perfect peace.

After one of Bick­er­steth’s sis­ters point­ed out the hymn had noth­ing spe­ci­fic about phys­ic­al suf­fer­ing, he replied, That is soon rem­e­died. He took up an en­vel­ope and wrote the fol­low­ing verse (ap­par­ent­ly nev­er pub­lished) on the back…

Peace, perfect peace, ’mid suffering’s sharpest throes?
The sympathy of Jesus breathes repose.