The doors to His mercy will be closed during the 6th seal just as He closed the doors of the ark to mankind. The purpose of the trumpets is to awaken the world to Jesus is coming soon. Have we forgotten that we were the created and our purpose was to glorify God. It was the sole purpose of our creation. Our God is love, perfect love.
Divine love is the balance between justice and mercy.
God loves justice and yet He is merciful. He demands it. We know not if we will awaken tomorrow. We must always stand in readiness to meet our God. To love Him is to become more like Him each day.