Jonathan Edwards said this quote

The spirit of bondage works by fear for the slave fears the rod: but love cries, Abba, Father; it disposes us to go to God, and behave ourselves towards God as children; and it gives us clear evidence of our union to God as His children, and so casts out fear. So that it appears that the witness of the Spirit the apostle speaks of, is far from being any whisper, or immediate suggestion or revelation; but that gracious holy effect of the Spirit of God in the hearts of the saints, the disposition and temper of children, appearing in sweet childlike love to God, which casts out fear or a spirit of a slave.

~ Jonathan Edwards

But that is the nature of true grace and spiritual light, that it opens to a person's view the infinite reason there is that he should be holy in a high degree. And the more grace he has, and the more this is opened to view, the greater sense he has of the infinite excellency and glory of the divine Being, and of the infinite dignity of the person of Christ, and the boundless length and breadth and depth and height of the love of Christ to sinners. And as grace increases, the field opens more and more to a distant view, until the soul is swallowed up with the vastness of the object, and the person is astonished to think how much it becomes him to love this God and this glorious Redeemer that has so loved man, and how little he does love. And so the more he apprehends, the more the smallness of his grace and love appears strange and wonderful: and therefore he is more ready to think that others are beyond him.

~ Jonathan Edwards

But saints and angels behold that glory of God which consists in the beauty of His holiness; and it is this sight only that will melt and humble the hearts of men, wean them from the world, draw them to God, and effectually change them. A sight of the awful greatness of God may overpower men's strength, and be more than they can endure; but if the moral beauty of God be hid, the enmity of the heart will remain in its full strength. No love will be enkindled; the will, instead of being effectually gained, will remain inflexible. But the first glimpse of the moral and spiritual glory of God shining into the heart produces all these effects as it were with omnipotent power, which nothing can withstand.

~ Jonathan Edwards

God is the highest good of the reasonable creature. The enjoyment of him is our proper; and is the only happiness with which our souls can be satisfied. To go to heaven, fully to enjoy God, is infinitely better than the most pleasant accommodations here. Better than fathers and mothers, husbands, wives, or children, or the company of any, or all earthly friends. These are but shadows; but the enjoyment of God is the substance. These are but scattered beams; but God is the sun. These are but streams; but God is the fountain. These are but drops, but God is the ocean.

~ Jonathan Edwards