I found this here. It's from John Owen on Communion with God.
The love of the Father is the same for all whom he has chosen to love. Whom God loves he loves to the end, and he loves them all alike. On whom he sets his love, it is set for ever. God's love does not grow to eternity or lessen in time. God's love is an eternal love that had no beginning and that shall have no end. It is a love that cannot be increased by anything we do and that cannot be lessened by anything in us.
But the love of God may be seen to be changeable in two ways:
1. God's love is changeable in its communications to us. It may sometimes be greater, sometimes less. Who among the saints does not know the truth of this? With what life, what light, what strength does God's love appear to us at times! And at other times how dead, how dark, how weak his love appears to be! All the graces of the Spirit in us, all sanctified enjoyments whatever, are fruits of his love. How variously these fruits are brought to us! How differently, at different times and seasons to the same person, his love is felt, experience will abundantly testify.
2. God “pours out his love in our hearts by the Holy Spirit” (Rom. 5:5). The Holy Spirit gives us a sense of it. He makes it known to us. Now this varies and is changeable. Sometimes it is more, sometimes less. Now he shines, and now he hides his face. But it is all done for our good. Our Father will not always chide in case we are cast down. He does not always smile in case we take his love for granted and neglect him. But still his love is always the same. When for a while he hides his face, he still gathers us with everlasting kindness.
Objection. But you will say, “This comes near to blasphemy!” You are saying that God loves his people in their sinning as well as in their strictest obedience. If this is so, who will bother to serve him or seek to please him?”
Answer. There are few truths of Christ which have not been greatly misunderstood and twisted by the ignorance of foolish men. The love of God in itself is the eternal purpose and act of God’s will. This is no more changeable than God himself. If it were, nobody could be saved. But God’s love does not change and therefore we are not consumed in his wrath. Does God then love his people while they are sinning? Yes! He loves his people but he does not love their sinning. Doesn’t God’s love change towards them? Not the purpose of his will to love them, but the working out of his gracious acts and disciplines towards them is changed. He rebukes them, disciplines them, hides his face from them, smites them, fills them with a sense of his indignation, but woe to us if he should change his love, or take away his kindness from us! Those very things which seem to suggest that his love to us changes in fact come to us from his love to us. “But won’t this encourage sin?” To suggest such a thing is to admit you have never tasted the love of God. The doctrine of grace may be turned into an excuse for doing evil but the principle cannot. And we may further affirm that God’s detesting and loathing sin in his people is not inconsistent with the acceptance of their persons and their being chosen for eternal life.
