10 And straightway coming up out of the water, he saw the heavens opened, and the Spirit like a dove descending upon him:
11 And there came a voice from heaven, saying, Thou art my beloved Son, in whom I am well pleased.
12 And immediately the spirit driveth him into the wilderness.
11 And there came a voice from heaven, saying, Thou art my beloved Son, in whom I am well pleased.
12 And immediately the spirit driveth him into the wilderness.
(Mark 1:10-12)
The "immediately" (εὐθὺς) implies that the going to wilderness is a direct effect of the voice from heaven. So, if the "beloved Son" meant in that voice was the mere man Jesus, then the spirit would have had more kindness towards him instead of tossing him (ἐκβάλλει) as if he was a passive ball. Therefore the absence of kindness about Jesus by the Spirit is a strong clue that the "beloved Son" was just the Spirit and not Jesus.
Apparently the mere man Jesus is superior in comparison to John insofar only he "saw the heavens opened". But even he is blind because what he saw after was apparently a mere dove, without knowing that that dove was the Spirit himself, the Christ and therefore the true Son of God.
If the Spirit was more sincere with the his human recipient, the latter would have seen the Spirit as the Spirit pure and simple, and not masked as a mere dove.