Augustine of Hippo — on Rom 8:26 (HOMILIES ON 1 JOHN 6.8)

“The Spirit that intercedes is nothing but the same charity which the Spirit has wrought in you.… Charity itself groans in prayer, and he who gave it cannot shut his ears to its voice. Cast away care, let charity make request, and the ears of God are ready to listen. The answer comes—not what you want but what is to your advantage.”