Ayyub A (Job) was one of the descendants of Ibrahim A (Abraham). He was a nephew of Ya'qub A (Jacob), the grandson of Ibrahim A (Abraham).

And We bestowed upon him Ishaq (Isaac) and Ya'qub (Jacob), each
of them We guided, and befeore him, We guided Nuh (Noah), and
among his progeny Dawud (David), Sulayman (Solomon), Ayyub (Job), Yusuf (Joseph), Musa (Moses), and Harun (Aaron). Thus do We
reward Al-Mushsinun (the good-doers).
Surah (Chapter) Al-An'am (The Cattle) The Qur-an 6:84

Allah (God) made Ayyub A (Job) His Rasul (Messenger) and send him to deliver His Message to his desert people of north eastern Filistin (Palestine).

Verily, We have sent the revelation to you (O Muhammad SAW) as
We sent the revelation to Nuh (Noah) and the Prophets after him;
We (also) sent the revelation to Ibrahim (Abraham), Isma'il (Ishmael),
Ishaq (Isaac), Ya'qub (Jacob), and Al-Asbat [the offspring of the
twelve sons of Ya'qub (Jacob)], 'Isa (Jesus), Ayyub (Job), Yunus
(Jonah), Harun (Aaron), and Sulayman (Solomon); and to Dawud
(David) We gave the Zabur (Psalms).
Surah (Chapter) An-Nisa" (The Woman) The Qur-an 4:163

Ayyub A (Job) faced stiff opposition and challenge from his people when he asked them to do good and shun evil. Very few people believed in him in the beginning but gradually his work began to bear fruits.

Ayyub A (Job) was a wealthy and prosperous man. He owned large farm lands, and had earned enormous wealth, many cattle and valuable property. Despite of his wealth Ayyub A (Job) remained a humble and patient servant of Allah (God).

One day thieves raieded his farm and killed most of his servants and took away all his cattle and his entire wealth. Ayyub A (Job) remained firm on his faith towards Allah (God). A little later the roof of the house collpased and most members of his family were crushed under it. Ayyub A (Job) was shocked but he patiently took what Allah (God) had willed for him.
He knew that all his possessions and his family were gifts from Allah (God) and he should not grieveor complain, if He had taken His things back from him.
Ayyub A (Job) also began suffering from skin disease that covered his body and face with sores. No one supported him through his misery.

In desparation, Ayyub A (Job) turned to Allah (God) for help.

And (remember) Ayyub (Job), when he cried to his Lord: "Verily, distress has
seized me, and you are the Most Merciful of all those who show mercy."
Surah (Chapter) Al-Anbiya" (The Prophets) The Qur-an 21:83

Allah (God) accepted the prayer of his obedient servant. Allah (God) asked Ayyub A (Job) to strike ground with his feet.

(Allah said to him): "Strike the ground with your foot: This is (a spring of) water to wash in, cool and a (refreshing) drink."
Surah (Chapter) Sad (The Alphabet Sad) The Qur-an 38:42

Ayyub A (Job) took a bath with that water which cured him from his disease. Like always, he expressed gratitude to Allah (God).

"And take in your hand a bundle of thin grass and strike therewith (your wife),
and break not your oath. Truly! We found him patient. Hoe excellent a slave!
Verily he was ever oft-returning in repentance (to Us)!.
Surah (Chapter) Sad (The Alphabet Sad) The Qur-an 38:44

Allah (God) cured Ayyub A (Job) of his sickness and also gave his family back to him as a reward of his steadfastness and unhindered belief in the Creator.

So We answered his call, and We removed the distress that was on him, and
We restored his family to him (that he had lost) and the like therof along with
them as a mercy from Ourselves and a Reminder for all those who worship Us.
Surah (Chapter) Al-Anbiya" (The Prophets) The Qur-an 21:84

Ayyub A (Job) remained patient under the most adverse situations of loosing his health, wealth and family. He took it without any stress and remained firm of his complete dependance on Allah (God).

Life of Ayyub A (Job) is an example for all of us to follow. Allah (God) has clearly mentioned in the Holy Qur-an:

And certainly, We shall test you with something of fear, hunger, loss of wealth, lives and fruits, but give glad tidings to As-Sabirun (the patient).
Who, when afflicted with calamity, say: "Truly! To Allah we belong and truly, to Him we shall return."
They are those on whom are the Salawat (i.e. who are blessed and will be forgiven) from their Lord, and (they are those who) receive His Mercy, and it is they who are the guided ones.
Surah (Chapter) Al-Baqarah (The Cow) The Qur-an 2:155-157