God is a communion of Triune love.  The three Persons are eternally with each other and for each other. The Father is for the Son in the Spirit.  The Son is for the Father in the Spirit. 

This God is also for us.  He is so for us that he eagerly seeks communion with us. God doesn’t need to be for others to fulfil himself.  No!  Within his own life, the three persons are for one another in the fullness of self-giving love.  And this fullness for the other within his own life flows out in a fullness of love for others beyond himself.

From eternity, this God has determined in love that he would be with us and for us as our Father in Jesus by the Spirit. He also determined we would be with him as his dearly loved children in Christ by the Spirit. He has eternally determined himself to be this God and no other.

In Romans 8: 31-34, Paul tells us that God is for us.  Here is Eugene Peterson’s paraphrase: 

So, what do you think? With God on our side like this, how can we lose? If God didn’t hesitate to put everything on the line for us, embracing our condition and exposing himself to the worst by sending his own Son, is there anything else he wouldn’t gladly and freely do for us? And who would dare tangle with God by messing with one of God’s chosen? Who would dare even to point a finger? The One who died for us—who was raised to life for us!—is in the presence of God at this very moment sticking up for us. Do you think anyone is going to be able to drive a wedge between us and Christ’s love for us? There is no way! Not trouble, not hard times, not hatred, not hunger, not homelessness, not bullying threats, not backstabbing… I’m absolutely convinced that nothing—nothing living or dead, angelic or demonic, today or tomorrow, high or low, thinkable or unthinkable—absolutely nothing can get between us and God’s love because of the way that Jesus our Master has embraced us.