Did Paul sell his paper and pen to right the Bible? It seems God wants you to sell all, so you can deal with the attitude of saying this is mine or that is mine, and so you don’t lay treasure on earth but rather in heaven (Luke 12:33). And selling house, car, material things keeps you from being stuck in one place and let’s you have the freedom to preach wherever God leads you. And it’s a command from Jesus in the flesh, that is ultimately why you should obey. God provides everything you need even after you sell everything. This includes a device to preach the gospel(Mark 16:15). Clothes to wear, (Matthew 6:25) and food and drink to have (Matthew 6:27). Rejecting what God has given you after forsaking all, is not relying on him to provide your needs. I don’t see why people try and point at someone preaching the word through different ways, is wrong to do. Matthew 6:21 says clearly where people put there faith in.