"Whoever sincerely testifies that none is worthy of worship but Allah and Muhammed is his messenger, Allah will save him from the Hellfire" (Bukhari, 'Ilm, 49) These waterfalls, mountains, and seas… They all came into existence out of nothing. At first there were no people, no plants, no animals, none. Allahs (swt) created the entire universe, from the smallest atom to the infinite galaxies and he is the one who rules it. He is the One who creates, sustains, kills and then resurrects all beings. Allah is ahad there is no god but Him (swt). And this is the main fundamental of Islam.