Joel is calling for repentance before the promise of an outpouring of His Spirit that will gather the nations to salvation’s breast.
He wants a sanctified leadership to entrust with the harvest of souls. They will need godly care, a holy learning atmosphere, and those who know their God to lead them.
God is calling for a total consecration, a total commitment, to Him and His ways. Then the promised outpouring will come and cover the earth.
See the clouds. Holy Ghost rains are coming; even the former and latter rains together.