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Use "watchfulness" in a sentence
"She had failed in watchfulness before (So 1: 6); now when converted, she is the more jealous of subtle sins (Ps 139: 23)."
"Persevering constancy ( "perseverance") and (that is, exhibited in) supplication are to be the element in which our watchfulness is to be exercised. for all saints -- as none is so perfect as not to need the intercessions of his fellow Christians."
"If food is indeed an issue, your watchfulness is your only prayer, so change nothing."