fæstan

Etymology
From, ,  derived from. The religious sense ("to abstain from food") is recorded in late Old English only (Wessex Gospels).

Verb

 * 1) to fasten, make fast or firm, entrust, commit, commend
 * 2) to fast (abstain from food)
 * 3) * 11th century, Wessex Gospels, Mark 2:19