What is the unrest of the will?
It is the unrest of unsettled resolution. It is to be vacillating in purpose, one day determined to be a meek, holy, upright man, the next day forsaking that determination and plunging anew into sin;
one day resolved to give up all for God, and the next day compromising between God and Mammon;
one day to be strong in my resolution toward the right, and the next day to find, with Samson, that my resolves snap like the green withes and new ropes, in the crisis of a mighty temptation.
There can be no such thing as the peace of God when there is not a fixed resolve, when you cannot say with David: "O God, my heart is fixed, my heart is fixed, trusting in Thee."
A.T. Pierson
You will guard him in shalom, shalom (the fullest, most wonderful peace) whose mind is propped up by You, because he trusts in You.
Is. 26:3