Casting Crown's lead singer is back to preaching the word of God after going through surgery to treat his cancer, and the Christian singer is encouraging people to have faith in God instead of listening to the "wrong voices."

On the band's Facebook page, Hall shared a photo of a bonsai tree to convey his message. He said that any kind of tree can be turned into a bonsai tree, and it all depends on the people surrounding it.

People just have to pick a small pot and "convince the tree their pot is as deep as it's root system is ever going to get it. And soon the tree will begin to believe it."

He explained that when people continuously say "no" to the tree, prune it whenever it tries to grow, and stop the tree from stretching, the more the tree will be convinced that "the pot is as big as it's world will ever be and this is as big as they will ever get."

But it is all a lie, he said. "This is exactly what your enemy wants to do to you. He will use storms and hardships in your life to convince you that you can never be more than your last mistake and never be any deeper or stronger than you are right now," he explained.

Hall stressed that Christians should not be a "defeated little bonsai tree" because God will never allow it. He quoted the Bible verse Psalm 1 which says: "You are a tree planted by streams of water that you will yield fruit in its season."

The singer added that the only thing true about a person is what God says about that person. He then used Psalm 139 to remind Christians that "He created us in the womb and that we are all here with a purpose."