Middle voice from G1223 and G3004; to say {thoroughly} that {is} discuss (in argument or exhortation): - {dispute} preach ({unto}) reason ({with}) speak.
Act 19:8And he went into the synagogue, and spake boldly for the space of three months, disputingG1256 and persuading the things concerning the kingdom of God.
Act 19:9But when divers were hardened, and believed not, but spake evil of that way before the multitude, he departed from them, and separated the disciples, disputingG1256 daily in the school of one Tyrannus.
Act 20:7And upon the first day of the week, when the disciples came together to break bread, Paul preachedG1256 unto them, ready to depart on the morrow; and continued his speech until midnight.
Act 20:9And there sat in a window a certain young man named Eutychus, being fallen into a deep sleep: and as Paul wasG1256 long preachingG1256, he sunk down with sleep, and fell down from the third loft, and was taken up dead.
Act 24:12And they neither found me in the temple disputingG1256 with any man, neither raising up the people, neither in the synagogues, nor in the city:
Act 24:25And as he reasonedG1256 of righteousness, temperance, and judgment to come, Felix trembled, and answered, Go thy way for this time; when I have a convenient season, I will call for thee.
Heb 12:5And ye have forgotten the exhortation which speakethG1256 unto you as unto children, My son, despise not thou the chastening of the Lord, nor faint when thou art rebuked of him:
Jud 1:9Yet Michael the archangel, when contending with the devil he disputedG1256 about the body of Moses, durst not bring against him a railing accusation, but said, The Lord rebuke thee.