Full context:   Belief in the "One God", also known as the Tawhid (التَوْحيدْ) in Arabic, consists of two parts (or principles): Islam also stresses that in order to gain salvation, one must avoid sin and perform good deeds. Islam acknowledges the inclination of humanity towards sin. Therefore, Muslims are constantly commanded to seek God's forgiveness and repent. Islam teaches that no one can gain salvation simply by virtue of their belief or deeds but by the mercy of God. However, repentance must not be used to sin any further. Islam teaches that God is merciful.