What is symbolised with a burning bush in the bible?

Answer 1

Actually several Presbyterian denominations use the burning bush as their central symbol: The Presbyterian Church in the U.S.A., The Church of Scotland, The Presbyterian Church in Ireland, The Presbyterian Church in Canada, and I suspect many continental Reformed churches use it as well. The use of the symbol in the Reformed/Presbyterian tradition appears to date back to the sixteen century.

Answer 2

The burning bush in The Bible is often a symbol of God's miraculous energy, sacred light, illumination, the burning heart of purity, and fear before the divine presence.

The thorn bush of fire without being consumed was a close intimate experience with God and Moses. It shows God's capacity to be, without having to consume His host, and that God can be in the most ordinary, even a problematic host, such as Moses. God's fire is of His own radiance, adding significance to the thorn bush while not really drawing from it. The picture shows God's desire to dwell within, giving His radiance to His the vessel of His habbitation. That the fire spoke from within the thorn bush went on to be Moses own living experience of God in time.