Jeremiah 32:38-40

38They will be my people, and I will be their God. 39I will give them singleness of heart and action, so that they will always fear me and that all will then go well for them and for their children after them. 40I will make an everlasting covenant with them: I will never stop doing good to them, and I will inspire them to fear me, so that they will never turn away from me.