Then Joshua said to Achan, ‘My son, give glory to the Lord, the God of Israel, and honour him. Tell me what you have done; do not hide it from me.’
 Achan replied, ‘It is true! I have sinned against the Lord, the God of Israel. This is what I have done...
 Then Joshua, together with all Israel, took Achan son of Zerah, the silver, the robe, the gold bar, his sons and daughters, his cattle, donkeys and sheep, his tent and all that he had, to the Valley of Achor.
 Joshua said, ‘Why have you brought this trouble on us? The Lord will bring trouble on you today.’ Then all Israel stoned him, and after they had stoned the rest, they burned them.  Over Achan they heaped up a large pile of rocks, which remains to this day. Then the Lord turned from his fierce anger. Therefore that place has been called the Valley of Achor ever since. (Joshua 7:19-26)For a 21st Century European it's hard to see why anything deserves a death penalty, but the Old Testament law establishes this as part of the community ethos. You forfeit your life if you betray God and his people in certain ways. Perhaps not your eternity, but certainly this life.
In a culture terrified of death and determined to leave a lasting legacy this is hard to comprehend, but we still want justice for wrongs done. And if some wrongs should receive some sort of sentence, then why should offence against the Lord not have serious consequence.
Achan's death sentence is "trouble from the Lord" against this confessed sinner (v20). And he becomes a monument of trouble. His grave marked as The Valley of Achor - Trouble Valley. The stones that bury Achan warn his community, but also must be read in a wider context.
Many pages and centuries later, Hosea later prophesies that it's the Lord's intent - driven by love for people who have betrayed him - to take this Trouble Valley and make it into Hope Door - (Hosea 2:13-15). The Lord will take the stones of trouble and subvert them, upend them, transform them to build a gateway through which sinners find hope.
The Lord's story then is one in which the place of wrath is turned into mercy, trouble to hope. In Hosea's preaching, a byword for betrayal becomes a place of beautiful betrothal. Thus stands the cross of Christ - not a pile of stones but a man pinned to a tree. Hosea's story is the story of the Lord Jesus - one who had no sin to confess and received a death sentence in our place.
Such is the Father's divine romance, orchestrated with the Son and the Spirit, to bring mercy to sinners. Let the stones cry out...
Come, ye sinners, poor and needy,
Weak and wounded, sick and sore;
Jesus ready stands to save you,
Full of pity, love and power.
Image - Bernard Spragg - Creative Commons