John Wesley on Hebrews 5:8

Though he were a Son - This is interposed. lest any should be offended at all these instances of human weakness. In the garden, how frequently did he call God his Father! Mt 26:39, &c. And hence it most evidently appears that his being the Son of God did not arise merely from his resurrection. Yet learned he - The word learned, premised to the word suffered, elegantly shows how willingly he learned. He learned obedience, when be began to suffer; when he applied himself to drink that cup: obedience in suffering and dying.