Present participle of 'glory': taking great pleasure or pride in something, or exulting boastfully.
From 'glory' (noun turned verb) plus the present participle '-ing' suffix. The gerund form allows the action of taking pride to be discussed as an ongoing process.
The biblical phrase 'glorying in tribulations' completely reframes how you think about suffering—it suggests choosing to find meaning in hardship, which influenced centuries of Christian thought about endurance.
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