Unless he punishes all sin in the individual who actually commits it, and does so in proportion to the sin, then who cares about this unjust [god]?
Unless everyone burns in hell for each of their sins in proportion to its magnitude, then la-di-da.
If you really get and eternity in hell for each sin, no matter how mild, then why not just commit them all and often?
Since you're getting the exact same punishment whether you steal a candy bar at 2 years old or rape a 2 year old at 50?
Your God is [something bad], Turretinfan. He's not just at all.
The general objection here is that if every sin deserves eternal punishment, there is no distinction between sins and consequently God is unjust. This argument assumes something, though, namely that every person in hell for eternity receives the same punishment there.
Although the duration is the same (unending), there is no necessity that the degree of suffering be the same. Dante Alighieri (in the 14th century) proposed a view of Hell in which there are many levels, ranging from the most severe (specifically reserved for Satan) to the least severe, for those with relatively less heinous sins. This view of Hell demonstrates that it is possible for all sinners to receive eternal punishment, even while some receive a more severe punishment than others.
Jesus himself endorsed the idea that there is differentiation in hell. He stated:
Matthew 10:15 Verily I say unto you, It shall be more tolerable for the land of Sodom and Gomorrha in the day of judgment, than for that city.
Matthew 11:22 But I say unto you, It shall be more tolerable for Tyre and Sidon at the day of judgment, than for you.
Matthew 11:24 But I say unto you, That it shall be more tolerable for the land of Sodom in the day of judgment, than for thee.
Mark 6:11 And whosoever shall not receive you, nor hear you, when ye depart thence, shake off the dust under your feet for a testimony against them. Verily I say unto you, It shall be more tolerable for Sodom and Gomorrha in the day of judgment, than for that city.
Luke 10:12 But I say unto you, that it shall be more tolerable in that day for Sodom, than for that city.
Luke 10:14 But it shall be more tolerable for Tyre and Sidon at the judgment, than for you.
There's also a minor objection: "If you really get and eternity in hell for each sin, no matter how mild, then why not just commit them all and often?"
a) Me personally? I don't like sinning. It doesn't please me. I prefer to honor my God.
b) There is a bit of a false dichotomy here: the two paths are not "sin a little and go to hell forever" vs. "sin a lot and go to hell forever" but rather between "go on in sin" and "repent of your sin and trust in Christ for salvation."
c) There seems to be a hidden view behind the words that maybe God punishes sins, but there's just no way he could punish them forever.
But, Jesus clearly declared that the punishment for those don't follow Him is everlasting fire:
Matthew 25:41 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:
43 And if thy hand offend thee, cut it off: it is better for thee to enter into life maimed, than having two hands to go into hell, into the fire that never shall be quenched: 44 Where their worm dieth not, and the fire is not quenched. 45 And if thy foot offend thee, cut it off: it is better for thee to enter halt into life, than having two feet to be cast into hell, into the fire that never shall be quenched: 46 Where their worm dieth not, and the fire is not quenched. 47 And if thine eye offend thee, pluck it out: it is better for thee to enter into the kingdom of God with one eye, than having two eyes to be cast into hell fire: 48 Where their worm dieth not, and the fire is not quenched.
Hell is a fearsome reality. I can appreciate that it is not a pleasant prospect: it is not supposed to be. God is not some omni-benevolent Santa Claus that will be patient with your sins forever. He has given you time to repent and believe. If you see your sins, and seek mercy rather than justice, pray to God the Father, asking Him for mercy for the sake of Christ.