Beware of being insincere about doing this, because the message God has given us very powerfully penetrates our thinking more than a two-edged sword penetrates flesh [MET]. It penetrates deeply into our souls and spirits, as a sharp sword can penetrate into our joints and marrow. That is, by his message God [PRS] discerns all that we think about, and he discerns all that we desire to do [MTY] (OR, His message exposes to us all our thoughts and all our desires).