A woman in flowing white and red robes sits on a cloud at the center, her gaze calm and serene as she holds up a golden chalice with a white host above it. A green sash drapes over her shoulder, and in her left hand she grasps two large keys, one gold and one silver, which hang down toward a group of figures below. Above the woman's head, a white dove with outstretched wings hovers in a glowing arc of golden light, while three cherubic faces emerge from the clouds to the right, their expressions gentle and attentive.

On the lower right, a group of men, women, and children look up in awe and devotion, their faces illuminated by the warm light that spills from the upper part of the canvas. The figures in the foreground are painted with soft, blended brushstrokes that give their skin a luminous quality, while the swirling clouds and drapery are rendered with energetic, sweeping lines. The composition forms a sweeping arc from the left, where the angel enters, through the central figure, and down to the cluster of onlookers, creating a sense of movement and unity.

Rich reds, glowing golds, and creamy whites dominate the color scheme, set against a dark, smoky background that enhances the dramatic effect of the light. Small details, such as the delicate fingers of the woman, the intricate design of the keys, and the expressive faces of the crowd, reveal the artist's careful attention to gesture and emotion. Faith is painted by Bartolomé Esteban Murillo between 1664 and 1665. The inclusion of a crowd of worshippers, some with hands clasped in prayer and others gazing upward, emphasizes the communal aspect of devotion.