A.T. Robertson Commentary Acts 8:21

"Thou hast neither part nor lot in this matter: for thy heart is not right before God." — Acts 8:21 (ASV)

Lot (κληρος). Same idea as "part" (μερις), only as a figure.

Matter (λογο). Literally, word or subject (Acts 15:6), the power of communicating the Holy Spirit. This use of λογος is in the ancient Greek.

Straight (ευθεια). Quotation from Ps 78:37. Originally a mathematically straight line as in Ac 9:11, then moral rectitude as here.