Albert Barnes Commentary Acts 8:31

"And he said, How can I, except some one shall guide me? And he besought Philip to come up and sit with him." — Acts 8:31 (ASV)

And he said, etc. This was a general acknowledgment of his need for direction. It showed a humble state of mind. It was also an acknowledgment, likely originating from this particular passage he was reading. He did not understand how it could be applied to the Messiah; how the description of his humiliation and condemnation (Acts 8:33) could be reconciled with the prevalent ideas of his being a prince and a conqueror. The same sentiment is expressed by Paul in Romans 10:14. The circumstances, the state of mind in the eunuch, and the result, strongly remind one of the declaration in Psalm 25:9, The meek will he guide in judgment, and the meek will he teach his way.

And he desired, etc. He was willing to receive instruction even from a stranger. The rich and the great may often receive valuable instruction from a stranger, and from a poor, unknown man.