Charles Spurgeon Commentary Jeremiah 32:15

"For thus saith Jehovah of hosts, the God of Israel: Houses and fields and vineyards shall yet again be bought in this land." — Jeremiah 32:15 (ASV)

For thus saith the LORD of hosts, the God of Israel; Houses and fields and vineyards shall be possessed again in this land.

Therefore, as an act of faith in God, the prophet bought this meadow.