Seeing

Revelation 3:17 Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:(King James Version)

Very few of us are able to see when we are wrong. It is far easier to point out the wrongs in others before we begin to even address the flaws in our own personalities. I admit that I have a bit of a temper. But GOD is teaching me through His Word to "be quick to listen, slow to speak and slow to become angry" James 1:19. When held up to the light of GOD's Word you can evaluate your life through a fresh set of eyes, the right set of eyes. GOD's eyes. He sees what we cannot see.- 
For the word of God is quick, and powerful, and sharper than any two edged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart. Hebrews 4:12
-And He works in our hearts trying to transform it by the power of His Holy Spirit so that we might be conformed to the image of His glorious Son, our LORD and Saviour Jesus Christ.  Romans 12:2

A person who is blind cannot see where they are going. In the same way a person who is spiritually blind cannot see what is right from wrong. Their whole way of thinking is depraved. They walk (live) according to the flesh. They are enemies of GOD and they do not know it. John 3:36
But GOD offers the perfect Gift. A free gift. The gift of grace, the gift of salvation, of forgiveness of sins. GOD extends His offer to all men (people) through Jesus Christ. His only begotten Son, sent to die for sinful man.

Amazing grace! How sweet the sound
That saved a wretch like me!
I once was lost, but now am found;
Was blind, but now I see.