You Will Be With Those Whom You Love
A man asked the Prophet (sal Allahu alaihi wa sallam), "When will the Hour be established O Allah's Apostle?" The Prophet (sal Allahu alaihi wa sallam) asked, "What have you prepared for it?" The man said, "I haven't prepared for it much of prayers or fast or alms, but I love Allah and His Apostle." The Prophet (sal Allahu alaihi wa sallam) said, "You will be with those whom you love." [Bukhari]
There are three important points to note here:
1. There is something more important than knowing when the Day of Judgement will occur. The more important thing is our preparation for that Day. What good or bad deeds have you sent forth for that Day? Each person's Judgement begins as soon as they die, and their grave becomes either a pit of fire or a garden of Paradise. Therefore, the most relevant thing to worry about are our daily deeds, as we never know when we will die and our Judgement commence.
2. The questioner in the hadith did the required (Fardh) prayers, fasts, and charity but not a whole lot extra. Some people do the opposite; they neglect the Fardh while doing a lot of the Sunnah (supererogatory). This is misguided because the greatest reward is for Fardh deeds and punishment is for neglecting the Fardh, not the Sunnah.
3. Most sobering is that you will be with the people you love on the Day of Judgement. If you love the Muslims, you will be with the Muslims and will follow them where they will go (Jannah). If you have love for the Kuffar, you will be with the Kuffar on the Day of Judgement. Peer into your heart to see who it is you really love. This will tell you where you will be on the Day of Judgement.
On the Day of Judgement “Allah will tell the people, ‘Follow the gods you used to worship.’ So whoever used to worship the cross will follow the cross, and whoever used to worship an idol will follow that idol." What Allah is telling us is that if somebody didn’t worship Him, they shouldn't expect the Reward from Him either. They should go to the gods they worshipped for their reward. That’s the justice of Allah. Then Allah (subhana wa ta'ala) will take all the false gods and throw them in Hell; and their people will have to follow them. And there is No god besides Allah.