'Understanding' in the Bible

which He lavished on us. In all wisdom and understanding [with practical insight]

for their [moral] understanding is darkened and their reasoning is clouded; [they are] alienated and self-banished from the life of God [with no share in it; this is] because of the [willful] ignorance and spiritual blindness that is [deep-seated] within them, because of the hardness and insensitivity of their heart.

Be kind and helpful to one another, tender-hearted [compassionate, understanding], forgiving one another [readily and freely], just as God in Christ also forgave you.

Therefore do not be foolish and thoughtless, but understand and firmly grasp what the will of the Lord is.