Minor Issue?

You think it is a minor issue, while with Allah it was very serious. (Q24:15)

Those who were left behind were glad to stay behind the Messenger of Allah. They did not want to do jihad with their wealth and themselves in the Way of Allah. They said, ´Do not go out to fight in the heat.´ Say: ´The Fire of Hell is much hotter, if they only understood.´ Let them laugh little and weep much, in repayment for what they have earned. If Allah returns you to a group of them, and they ask you for permission to go out, say, ´You will never go out with me, nor will you ever fight an enemy with me. You were happy to stay behind the FIRST TIME, so stay behind with those who are left behind.´ Never pray over any of them who die or stand at their graves. They rejected Allah and His Messenger and died as deviators. (Q9:81-84)

We divert their hearts and eyesight, as they did not believe in it (Nature) the FIRST TIME; and We leave them wandering in their transgression. (Q6:110)

Can you rescue one who is already in the Fire? (Q39:19)

You can ask forgiveness for them, or not ask forgiveness for them. Even if you asked forgiveness for them seventy times, Allah still would not forgive them. That is because they have rejected Allah and His Messenger. Allah does not guide deviant people. (Q9:80)

When you see them, their outward form appeals to you, and if they speak you listen to what they say. But they are like propped-up planks of wood. They imagine every cry to be against them. They are the enemy, so beware of them. Allah fight them! How they are perverted! (Q63:4)

On that Day, We shall ask Hell, Are you now full? Hell will answer, Are there any more? (Q50:30)