Will only Few People go to Heaven?

The picture is reminiscent of Dante's Inferno.

Enter ye in at the narrow gate: for wide is the gate, and broad is the way that leadeth to destruction, and many there are who go in thereat. [14] How narrow is the gate, and strait is the way that leadeth to life: and few there are that find it!
drbo.org/chapter/47007.htm

Many are called...