The element of knowledge is necessary in order to realise the benefits of following the commands of Allah and the sense of happiness and fulfillment that one may attain by following them; and to understand what it is in the forbidden things that causes harm, imperfection and evil.
When a person realises that, and adds strong willpower, the desire for spiritual achievement and the wish to live as a complete human being (as opposed to an animal-like existence), then it will become easy for him to attain the quality of patience.
The bitterness of patience will become sweet and the pain of patience will become joy.
book: Patience and Gratitude by Ibn Qayyim Al-Jawziyyah رحمه الله pg. 32
1. Prophet Muhammad (ﷺ) will be the first to cross it.
2. It's thinner than a hair, and sharper than a sword. It's placed right above Jahanam
3. Not a single person will be able to escape it, every soul must cross it. Except the disbelievers, their destination is automatically Jahannam
4. True believers will pass it like lightning or wind, some will crawl, some will slip and fall, some will be snatched and thrown into the fire
5. Whoever was slow to obey and worship Allah will pass over it slowly with fear.
Reference: Sahih al-Bukhari 7439 | Sahih al-Bukhari 6573
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“God, grant me the serenity to accept the things I cannot change, Courage to change the things I can, And wisdom to know the difference. اللهم، امنحني السكينة لقبول الأشياء التي لا أستطيع تغييرها والشجاعة لتغيير الأشياء التي أستطيع تغييرها ، والحكمة لمعرفة الفرق بينهما.”
Riyad as-Salihin, The Book of the Remembrance of Allah, Book 15, Hadith 41
Chapter: The Excellence of Gathering in which Allah is Remembered
Abu Hurairah and Abu Sa'id Al-Khudri (May Allah be pleased with them) reported:
The Messenger of Allah (ﷺ) said, "When a group of people assemble for the remembrance of Allah, the angels surround them (with their wings), (Allah's) mercy envelops them, Sakinah, or tranquillity descends upon them and Allah makes a mention of them before those who are near Him."