Illustrate a scene inspired by Acts 4:31 in the Bible. Unlike the text, visually represent this event: a group of people, diverse in gender and descent, gathered in a meeting place that's trembling subtly. Their faces are expressive, filled with awe and inspiration, symbolizing their filling with the Holy Spirit. Their postures suggest they're speaking, indicating that they're expressing the word of God boldly. Paint this entire scene with the glowing, translucent and fluid nature of the watercolor medium, capturing the ethereal feel of the event without using any textual elements.