A merciful god?

Matthew 25:41-46

Then shall he say also unto them on the left hand, Depart from me, ye
cursed, into everlasting fire, prepared for the devil and his angels:

For I was an hungred, and ye gave me no meat:
I was thirsty, and ye gave me no drink:

I was a stranger, and ye took me not in: naked, and ye clothed me not:
sick, and in prison, and ye visited me not.

Then shall they also answer him, saying, Lord, when saw we thee an hungred,
or a thirst, or a stranger, or naked, or sick, or in prison, and did not
minister unto thee?

Then shall he answer them, saying, Verily I say unto you, In as much as ye
did [it] not to one of the least of these, ye did [it] not to me.

And these shall go away into everlasting punishment:
but the righteous into life eternal.