Come to share in the divine nature.
We are supposed to be similar to God. But usually in our behaviour we are very far from it. The reason is that we do not use his grace and peace. Moreover we seem not to know our God and his divine power bestowed on us. And therefore we live by our own and not using his promises. The result is that we are still restless and anxious. Also we are slaves of our desires and plans for future. Yet we ought to change our mind and try to supplement our faith with virtue, and knowledge, and self-control, and endurance, and devotion, and mutual affection, and overall with love. The best way to live like that is to abide in the shadow of the Almighty and to trust him from the whole heart. In fact, when we cling to him, he will grant us the strength we need. When we pray to him, he will give us the answer for our requests. And when we share in his divine nature, we well really become the children of God.