Verse 20: And Achan answered Joshua, and said, Indeed I have sinned against the LORD God of Israel, and thus and thus have I done…
[Truly I have sinned, etc.] The individual words, proceeding from an afflicted soul, have their own emphasis (Menochius). Truly; It is the language of one ingenuously and openly confessing; he does not excuse, after the manner of hypocrites: I; It is not the case that I would accuse another; I myself have erred (Malvenda): Against the Lord; Against the precept of the Lord, or, with the Lord alone knowing (Menochius): The God of Israel; that is to say, God, by whom I was made, even indeed as an Israelite, so that I might with good reason be held as altogether ungrateful (Masius).
Indeed I have sinned: He seems to make a sincere and ingenuous confession, and loads his sin with all just aggravations. Against the Lord; against his express command, and just rights, and glorious attributes. The Lord God of Israel; the true God, who hath chosen me and all Israel to be the people of his peculiar love and care.
[And thus and thus have I done] It contains a Hypotyposis of what happened and a clear explanation, in which he progresses in an orderly fashion; first from the very sense of sight, as the instigator of evil things, to the soul inflamed with lust; thence unto the deed; finally unto sting of conscience, whence also the concealment followed. Which sort of series we observe to be in almost all sins (Masius).
 Hebrew: וַיַּ֧עַן עָכָ֛ן אֶת־יְהוֹשֻׁ֖עַ וַיֹּאמַ֑ר אָמְנָ֗ה אָנֹכִ֤י חָטָ֙אתִי֙ לַֽיהוָה֙ אֱלֹהֵ֣י יִשְׂרָאֵ֔ל וְכָזֹ֥את וְכָזֹ֖את עָשִֽׂיתִי׃
 Hebrew: אָמְנָ֗ה אָנֹכִ֤י חָטָ֙אתִי֙.
 That is, a vivid depiction of scenes or events.