The Fruit of the Spirit.
Let no one ever presume to rest in any supposed testimony of the Spirit, which is separate from the fruit of it. If the Spirit of God does really testify that we are children of God, the immediate consequence will be the fruit of the Spirit, even love, joy, peace, long-suffering, gentleness, goodness, fidelity, meekness, temperance. And however this fruit may be clouded for a while, during the time of strong temptation, while Satan is sifting him as wheat, yet the substantial part of it remains, even under the thickest cloud. It is true, joy in the Holy Ghost may be withdrawn, during the hour of trial. Yea, the soul may be exceeding sorrowful, while the hour and power of darkness continues. But even this is generally restored with increase, and he rejoices with joy unspeakable and full of glory.
John Wesley, 1788