True believers will compete for good deeds throughout their lives because of their fear of facing a dreadful reckoning in the Hereafter. They will guard Allah's boundaries meticulously. The Qur'an describes this fear of the true believers thus:
They fulfil their vows and fear a day whose evil will spread far and wide. They give food, despite their love for it, to the poor and orphans and captive [saying], "We feed you only out of desire for the Face of Allah. We do not want any repayment from you or any thanks. Truly We fear from our Lord a glowering, calamitous Day." (Surat al-Insan: 7-10)
In the Hereafter Allah will brighten the faces of those who fear Him and the accounting they will give to Him will be eased. The book of their deeds will be given to them in their right hands and the reckoning they feared will be made easy:
As for him who is given his Book in his right hand, he will be given an easy reckoning and return to his family joyfully. (Surat al-Inshiqaq: 7-9)
When the reckoning comes to an end, true believers will be in a state of happiness for having escaped the punishment of Hell. As indicated in the verse above, they will return to their loved ones with joy.