Holy Fire Blue - Worship Flags - Silk Printed Quill Wing Flags WXL-Quill - 40" Flexible RodWorship Flags Design Holy Fire Blue WING Variant Blue Symbol of Heaven. The Holy Spirit; heaven; heavenly visitation. As we seek to fan our flame for God, Let the fleshly and worldly desire burn off from our heart. The closer we draw, the lighter it becomes. Just like when a rocket reached a certain attitude, the force of gravity that pulls it down diminishes. Blue flame speaks of heavenly visitation. Where the air is thin and the view is breathless.