Arminianism is 'natural' in one sense, in that it represents a characteristic perversion of Biblical teaching by the fallen mind of man.
J. I. PackerWe need to discover all over again that worship is natural to the Christian, as it was to the godly Israelites who wrote the psalms, and that the habit of celebrating the greatness and graciousness of God yields an endless flow of thankfulness, joy, and zeal.
J. I. PackerIt has been said that in the New Testament doctrine is grace; and ethics is gratitude; and something is wrong with any form of Christianity in which, experimentally and practically, this saying is not being verified. Those who suppose that the doctrine of God's grace tends to encourage moral laxity are simply showing that, in the most literal sense, they do not know what they are talking about. For love awakens love in return; and love, once awakened, desires to give pleasure.
J. I. Packer