Isaiah 43:2 When thou passest through the waters, I will be with thee; and through the rivers, they shall not overflow thee: when thou walkest through the fire, thou shalt not be burned; neither shall the flame kindle upon thee.
Israel has great and rich promises from the Lord. I believe that these same promises have a secondary application to us. As we do His work we have His protection. He is looking for those who would by faith step out and do great things in His name. We need not concern ourselves with our safety because He will be with us. This promise accompanies the Great Commission in
Mark 16:15 And he said unto them, Go ye into all the world, and preach the gospel to every creature.