Ge-swefian

According to the Old English Dictionary:

ic -swefige;

ge-swefian

p. ode; pp. od [swefan to sleep] To cause to sleep, cast asleep, lull, appease; sōpīre, sŏpōrāre :-- Ic geswefige sōpio, Ælfc. Gr. 30, 5; Som. 34, 57, MS. D. God geswefode ðone Adam God caused Adam to sleep, Homl. Th. i. 14, 20. Drihten on róde mid deáþe wæs geswefod the Lord was put to sleep by death on the cross, ii. 260, 18: i. 496, 12: Boutr. Scrd. 19, 37. Ic eom geswefod sŏpōrātus sum, Ps. Lamb. 3, 6. ge-swefian