Achan and the Valley of Achor
Sung Psalm 44:1-8
Reference Hosea 2:14-15 c.f. Joshua 7:16-26, 6:18-19 and 7:1.
These verses refer to three historical events (not in order) namely after the Red Sea crossing (singing), the time in the wilderness, and the trouble with Achan.
The episode at Achor shows the seriousness of sin in the church and how corporate responsibility meant all Israel were troubled. Achan coveted and kept for himself that which should have been consecrated to God (just like Ananias and Sapphira in Acts 5).
Hosea is referring to Israel stealing from God (2:8-9) for their idolatry. N.B. Covetousness is idolatry! The valley of Achor, so called because it means trouble, was to be a door of hope with a new start after sin is put away (NT equivalent is excommunication of impenitent member).
The ultimate fulfilment of this poetic prophecy is in the gathering of the Gentiles (v23 c.f. Romans 9) and in the new heavens and earth (v18) when God’s covenant with Noah and creation is brought to full fruition.