kneels down

Kneels down is a phrasal verb describing the act of lowering oneself onto one or both knees, typically from a standing position.

The "down" emphasizes the downward motion toward the ground or floor.

People kneel down for prayer, to propose marriage, to tend to someone who has fallen, or to get closer to a child's eye level.

She kneels down every night before bed to pray.

The phrase is largely synonymous with simply "kneel," though kneels down feels more deliberate or momentary.