English Standard Version (ESV)
By grace, Paul reminds us, by grace.
Let it be a continual reminder to us all, that God works by grace. You have been chosen and blessed by God not because of what you have done or what you will do, but because God is loving and kind and willing to pour out his mercy. You are loved unconditionally, and nothing in your life, good or evil, will prevent God from loving you.
So whatever questions we have for God, let us never doubt his love or his grace. I have plenty of things I do not understand, but although I do not see clearly how God is at work, I do not doubt that his actions are rooted in his grace and love.