וַיַּ֧עַן עָכָ֛ן אֶת־יְהוֹשֻׁ֖עַ וַיֹּאמַ֑ר אָמְנָ֗ה אָנֹכִ֤י חָטָ֙אתִי֙ לַֽיהוָה֙ אֱלֹהֵ֣י יִשְׂרָאֵ֔ל וְכָזֹ֥את וְכָזֹ֖את עָשִֽׂיתִי׃
And Achan answered Joshua, and said: ‘Of a truth I have sinned against the LORD, the God of Israel, and thus and thus have I done.
Read halakhic rulings (Jewish law) on Joshua 7:20: and classical halakhic sources.