We see in human history two main phenomena: existence and multiplicity of evil (esp. moral evil, without denying the physical evil) and liberation, in terms of reorientation of the society, relief work, movement of justice and liberation, etc; so we see faith theologically in the history of the relationship of man with God. In this God-man history there is a history of iniquity from human side and the history of salvific act from God.
This history of salvation presupposes the history of iniquity. According to faith we know that human history has experienced some sort of sinfulness, alienation from the right relationship with God. Man has a natural tendency to go astray, to miss the mark, goal. The genesis a/c presents mythically what is iniquity, sin and its consequence. Yet, God is after the human being. Whenever there is sin and breach of covenant God is there with a new promise. In the salvation history of the OT, we are aware how God brings back Israel to him. For Israel, the exodus event is a salvation work of God. Even the creation a/c is seen from the perspective of salvation history. In the salvation history God uses natural powers as we find in the exodus event and his spokesmen - prophets. The Jesus event is also seen from the perspective of salvation history. Now, God is working through his spirit in the church and through others who work for the better world, the kgdm.
The essence of God is relationship. Hence, it is his nature to repair the brokenness, iniquity. He cannot be God if he is different to human situation. Hence, impelled by his essence 'love', God goes after the sinful humanity to bring it back to him and to the right life (relationship with him and each other). This is clear in the mystery of incarnation where we find God 'messing' himself in the person of Jesus of Nazareth in the human situation.
Finally, God is saviour from sin and he gives internal, true freedom. This is done in the very death and resurrection of Jesus Christ who somehow showed the way of being free in becoming the true son and daughter of God.
The history of salvation and iniquity go along with each other even today in our history in our life. While there is 'grace' of God, it depends on the person or community for the 'battle' won or lost. God is the loving father, who having established the relationship-covenant ever remains faithful.