Webster's defines Anemia as the quatitative deficiency of hemoglobin. Another definition from the A.D.A.M. Medical Encyclopedia says it is a condition in which the body doesn't have enough healthy red blood cells to carry oxygen to body tissue.
Anemia can have lots of causes and symtoms depending on what type it is and the prognosis can be just as varied; but in short, common sense will tell us that you are not going to do very well if your body doesn't get the oxygen it needs and in most s could eventually cause death in some form or another.
Now let us apply this to our walk with the Lord... Physically our bodies can't live without oxygen and when you have something like anemia which prevents you from getting that, one can't survive to thrive properly. Spiritually speaking, apart from God the same thing will happen to a person. One difference between physical anemia and spiritual anemia is that all the causes of spiritual anemia can be summed up under one word... sin. Just like a poor diet of the wrong kinds of food can cause anemia due to iron or B12 deficiency, if you allow sinnful things into your life it will cause spiritual anemia from a deficiency of the presence and power of God in your life.
To know if you are spiritually anemic you have to do an examination and look for symptoms. You can do a "self-examination" but the best way is to see the "Great Physisian"; God Himself. Through His Holy Word, He can be right there with you and point out every cause of your "sickness".
Job asked the question in Job 13:23 "How many are mine iniquities and sins? make me to know my transgression and my sin."
You can't be rid of the problem if you don't know the cause.
Psalm 4:4 "Stand in awe, and sin not: commune with your own heart upon your bed,a nd be still. Selah."
Psalm 26:2 "Examine me, O LORD, and prove me: try my reins and my heart."
Psalm 27:6 "I call to rememberance my song in the night: I commune with mine own heart: and my spirit made diligent search."
Psalm 139: 23& 24 " Search me, O God, and know my heart: try me, and know my thoughts: and see if there be any wicked way in me and lead me in the way everlasting."
(other verses: Psalm 119:59, Jeremiah 17:9, Hag. 1:7, Matt. 26:22, Mark 14:19, 1 Cor. 11: 27& 28, 2 Cor. 13:5, and Gal. 6:3)
Sometimes that sin is not an outward act like lying or stealing, sometimes those are merely symptoms of secret sin of the heart.
"Whatsoever a man thinketh in his heart so is he..."
What would cause the symptom of lying or stealing but not having a right relationship with God? If one has a right relationship with God then sin and darkness can not be in him. "For what fellowship hath light with dark?" "If God be for us, who can be against us?" I know I'm just paeaphrasing those verses but you see what I mean...
You want a good verse to get you started on your "spiritual anemia" testing? Go with Lamentations 3:40 "Let us search and try our ways, and turn again to the Lord." In this passage alone you can see where spiritual sickness can lead; the Lord's anger kindled and being slain (v.43), separation from God and prayers unanswered (v.44), a ruined testimony (v.46), desolation and distruction (v.47). Without proper "treatment" this is your prognosis. But it doesn't have to be.
Treatment for Spiritual Anemia can be found in 1 John, starting with chapter 1; among other scripture. Starting in 1 John 1:7 and going through the rest of the book.
But let's look at 1 John 1:9 first: "If we confess our sins, he is faithful and just to forgive us our sins, and cleanse us from all unrighteousness." This is the beginning of treatment. For a physically anemic person this would be like a blood transfusion. You're getting rid of sin and it is replaced with the righteousness of Christ. 1 John 2:2 "And he, [Christ], is the propitition for our sins: and not for our sins only, but also for the sins of the whole world."
For the sake of our analogy we might call this our "short term treatment" for spiritual anemia. It is a restored relationship with God, but one should always seek a "long term treatment" to keep that right relationship with God and be rid of Spiritual Anemia.
My mother would call them "the basics" but I like the short poem that follows to explain...
Advice to All Christians
Five things, if remembered, will help you each day;
Obeyed, they will keep you from going astray;
Though Satan may tempt you and trials betide
You surely will conquer, and in Christ abide.
Keep Looking to Jesus. He never can fail
And walk in His footsteps in every detail
The world's vain allurements will vainsh from sight
By "looking to Jesus" your Savior and Light.
Read Daily Your Bible if you would be strong
To witness for Jesus and overcome wrong
"The Author", "The Book" and "the Doer" abide
But they who neglect it, will surely backslide.
Pray Without Ceasing This will bring you to Him
Who cleanses and keeps you a victor o'er sin
There's nothing so great that our God cannot do
And nothing so small but He'll undertake too.
Confess Him To Others be bold for your King
To those who are lying in darkness and sin
What help can you better to all recommend
Than this blessed Jesus... the needy one's Friend?
Do Something For Jesus He did all for you
Your joy find in willing His sweet will to do
So seeking to please Him through life day by day
his presence gladden each step of your way.
So finally I ask you, are you anemic? Do you have any signs or symptoms that indicate that something is wrong spiritually? If so, then you should jet an examination and get the spiritual treatment you so badly need. Christ came to heal that which is sick and to find that which was lost...