1 John 2:11

But the person who hates his brother is in the darkness [of sin] and he lives in [harmony with] that darkness, and he does not know where he is heading, because the darkness [of sin] has blinded his eyes [to his spiritual condition].

John 12:35

So, Jesus said to them, "The Light will be among you for only a little while [longer]. Walk around while you [still] have the Light [with you], before darkness surrounds you. For the person who walks around in darkness does not know where he is going.

2 Corinthians 4:4

For the god of this world [i.e., Satan] has blinded the minds of the unbelievers, so that they would not see the light of the Gospel of the splendor of Christ, who is the image of God.

1 John 2:9

The person who claims to be living in [harmony with] the light [i.e., by obeying God's truth], and [yet] hates his brother is still [living] in the darkness [of sin].

John 12:40

"God has blinded their eyes [of understanding] and closed their minds. If He had not done so, they would [be able to] see with their eyes and understand with their minds and turn [to God] so He could heal them [spiritually]."

2 Corinthians 3:14

But the minds of the Israelites became dull for, to this very day, the same veil remains on them [i.e., figuratively] when the Old Agreement [Scriptures] are read. It is not being revealed to them that the Old Agreement is being abolished by Christ [i.e., by His death on the cross. See Col. 2:14].

Titus 3:3

For we [Christians] were also once foolish, disobedient, deceived, enslaved to various kinds of [evil] desires and [sinful] pleasures. [We used to] live in malice and envy, hating people and being hated by them.

1 John 1:6

If we claim to share a relationship with God and yet live in darkness [i.e., in a sinful way], we are lying and are not living a truthful life.

Revelation 3:17

For you are saying, 'I am wealthy; I have made plenty of money and do not need anything.' But you do not know that you are [spiritually] wretched and miserable and poor and blind and naked.

Treasury of Scripture Knowledge

Summary

But he that hateth his brother is in darkness, and walketh in darkness, and knoweth not whither he goeth, because that darkness hath blinded his eyes.

And walketh

General references

Bible References

He that

1 John 2:9
The person who claims to be living in [harmony with] the light [i.e., by obeying God's truth], and [yet] hates his brother is still [living] in the darkness [of sin].
John 12:35
So, Jesus said to them, "The Light will be among you for only a little while [longer]. Walk around while you [still] have the Light [with you], before darkness surrounds you. For the person who walks around in darkness does not know where he is going.
Titus 3:3
For we [Christians] were also once foolish, disobedient, deceived, enslaved to various kinds of [evil] desires and [sinful] pleasures. [We used to] live in malice and envy, hating people and being hated by them.

And walketh

John 12:35
So, Jesus said to them, "The Light will be among you for only a little while [longer]. Walk around while you [still] have the Light [with you], before darkness surrounds you. For the person who walks around in darkness does not know where he is going.

General references

John 11:10
But if he walks at night he [might] stumble, because there is no light [to see by]. [Note: These words have a figurative meaning as Jesus is speaking about His mission in life].