Looks like there will be lots of room in Heaven while Hell will be overflowing ...
Not so.
Proverbs 27:20
Hell and Destruction are never full;
So the eyes of man are never satisfied.
Luke 14:23
Then the master said to the servant, ‘Go out into the highways and hedges, and compel them to come in, that my house may be filled.’
Therefore hell hath enlarged herself, and opened her mouth without measure: and their glory, and their multitude, and their pomp, and he that rejoiceth, shall descend into it. And the mean man shall be brought down, and the mighty man shall be humbled, and the eyes of the lofty shall be humbled: (Isaiah 5:14-15)
"Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord." (Acts 3:19)