Muhammad - the messenger of GOD - and those with him are harsh and stern against the disbelievers, but kind and compassionate amongst themselves. You see them bowing and prostrating, as they seek GOD's blessings and approval. Their marks are on their faces, because of prostrating. This is the same example as in the Torah. Their example in the Gospel is like plants that grow taller and stronger, and please the farmers. He thus enrages the disbelievers. GOD promises those among them who believe, and lead a righteous life, forgiveness and a great recompense.