Why did lord krisha choose Arjuna instead of karna, Dronacharya, Bhisma?

Mahabharata is epic and always continues to fascinate people, even for those who know the least. It is a great treasure of facts and knowledge and it is impossible for anyone to know everything. Many of the facts omitted or even unknown to people. Mahabharata shows us the application of philosophy when it comes to deciding between right and wrong in cases where the answer is not simple. Mahabharata’s four main characters are Arjuna, Karna, Dronacharya, and Bhishma.

From Karna, Drona, Bhisma, and Arjuna, it is Arjuna who stands out from the four as the hero. Karna, Drona, and Bhishma are remembered as tragic heroes. They all experienced sad deaths on the battlefield. So why does Lord Krishna choose Arjuna instead of Karna?

Karna was a great warrior, in many ways greater than Arjuna. They may have been equal as archers, but physically, Karna was by far the stronger of the two. And even in sticking to one’s principles, 

But in Karna’s life, there was one fatal flaw. He made his friendship and loyalty to Duryodhan higher than anything else, even higher than right and wrong, and even higher than God. While loyalty is a great value in such cases when it overrides a sense of dharma and even the direct calling of the Divine in the form of Shri Krishna, such loyalty leads one to a tragic end.His tragic story warns us to choose loyalties wisely. Only Krishna deserves such unflinching loyalty.