Pashtuns may be one of Israel's "lost" tribes

That then the LORD thy God will turn thy captivity, and have compassion upon thee, and will return and gather thee from all the nations, whither the LORD thy God hath scattered thee.
If any of thine be driven out unto the outmost parts of heaven, from thence will the LORD thy God gather thee, and from thence will he fetch thee:
And the LORD thy God will bring thee into the land which thy fathers possessed, and thou shalt possess it; and he will do thee good, and multiply thee above thy fathers. Deuteronomy 30:3-5

According to the Daily Telegraph:

The ethnic group at the heart of the Taliban in Afghanistan and Pakistan may descended from their Jewish enemy, according to researchers in India. Experts at Mumbai's National Institute of Immunohaematology believe Pashtuns could be one of the ten "Lost Tribes of Israel". The Israeli government is funding a genetic study to establish if there is any proof of the link. An Indian geneticist has taken blood samples from the Pashtun Afridi tribe in Lucknow, Northern India, to Israel where she will spend the next 12 months comparing DNA with samples with those of Israeli Jews...

...There are an estimated 40 million Pashtuns around the world including more than 14 million in Afghanistan and 28 million in Pakistan, mainly in the North West Frontier Province and Tribal areas but also with a strong presence in Karachi. Many have grown up with stories of their people being "Children of Israel". According to legend, they are descended from the Ephraim tribe which was driven out of Israel by the Assyrian invasion in around 700BC. Evidence of ancient Jewish settlement has been found in Herat, close to Afghanistan's border with Iran, where a graveyard contains tombs inscribed in Hebrew. The Afghan capital Kabul also has a centuries-old synagogue which has long been abandoned.

The "lost" ten tribes aren't lost to God. According to Revelation 7:4-8, during the Tribulation there will be 144,000--12,000 from each of the 12 tribes--who will be God's servants, with a seal on their foreheads.