Isaiah 26

Isaiah 26:3:
“Thou wilt keep him in perfect peace, whose mind is stayed on thee”

David Wilkerson wrote: “Right now we are living in a time of chaos the world has never seen. And Satan is using fear to torment multitudes. In the very midst of this time our Lord is calling his people, saying: “How will you deal with this? Are you going to believe my promises in spite of everything else that takes place around you? Will you trust me in spite of your deepest fears?”
To do this, we have to fix our minds on the Lord. “Thou wilt keep him in perfect peace, whose mind is stayed on thee” (Isaiah 26:3). Our will has to be involved in this. No matter how unbelievably dark our situation becomes, something of faith has to rise up in us that says, “No, devil. No, world. I will trust in the One who has faithfully delivered me at all times.”
That is when perfect peace comes. It is supplied by the Lord himself, who is pleased by our trust in him. Then, as chaos reigns all around, our lives will speak the powerful message of his joy. He has given us a song to sing to the world: “The Lord is faithful. He sees his people through!”​ Perfect peace comes from focusing on Gods thoughts of you. 

Isaiah 26:8:
Yea, in the way of thy judgments, O Lord, have we waited for thee; the desire of our soul is to thy name, and to the remembrance of thee.