John Gill Commentary Acts 8:23

"For I see that thou art in the gall of bitterness and in the bond of iniquity." — Acts 8:23 (ASV)

For I perceive that you are in the gall of bitterness ,
&c.] Alluding to (Deuteronomy 29:18) (32:32) with which compare (Hebrews 12:15) and signifying, that he was in a state of nature and unregeneracy; under the power and dominion of covetousness, ambition, and hypocrisy; and in a way pernicious to himself, infectious to others, and ungrateful to God, and to good men.

And that instead of the root of the matter, the truth of grace being in him, there was nothing in him but the bitter root of sin; which bore gall and wormwood, and everything that was nauseous and disagreeable:

and in the bond of iniquity ;
referring to (Proverbs 5:22) (Isaiah 58:6) and suggesting, that he was held fast bound in the bonds of sin, and with the cords of iniquity, or was entirely under the government of his lusts: the preposition (eiv) , which we render "in", may retain here, as is by some observed, its proper sense of "for", or "into"; and have the same signification it has in (Hebrews 1:5) "I will be to him for a father", or "a father", and "he shall be to me for a son", or "a son".

And then the sense of Peter is, I plainly perceive and clearly see by your words and actions, that you are nothing else but a lump of bitter gall, and a bundle of sin and wickedness.