Why Memorize Scripture?
1. To avoid sin.
"Thy word have I hid in mine heart,
that I might not sin against thee."
2. Out of obedience.
"My son, keep my words, and lay up my commandments with thee.
Keep my commandments, and live;
and my law as the apple of thine eye.
Bind them upon thy fingers,
write them upon the table of thine heart."
3. In order to resist the devil
In Matthew 4, Jesus was tempted three times by the devil, and each time He quoted scripture back saying "it is written...". In the end (v. 11) the devil left Him. We too can do that, if we lay up His words in our heart through memorization. John 14:26 says: "But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you."
Then was Jesus led up of the Spirit into the wilderness to be tempted of the devil. And when he had fasted forty days and forty nights, he was afterward an hungred. And when the tempter came to him, he said, If thou be the Son of God, command that these stones be made bread. But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God. Then the devil taketh him up into the holy city, and setteth him on a pinnacle of the temple, And saith unto him, If thou be the Son of God, cast thyself down: for it is written, He shall give his angels charge concerning thee: and in their hands they shall bear thee up, lest at any time thou dash thy foot against a stone. Jesus said unto him, It is written again, Thou shalt not tempt the Lord thy God. Again, the devil taketh him up into an exceeding high mountain, and sheweth him all the kingdoms of the world, and the glory of them; And saith unto him, All these things will I give thee, if thou wilt fall down and worship me. Then saith Jesus unto him, Get thee hence, Satan: for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve. Then the devil leaveth him, and, behold, angels came and ministered unto him.
4. To teach our children.
"And these words,
which I command thee this day,
shall be in thine heart:
And thou shalt teach them diligently unto thy children,
and shalt talk of them when thou sittest in thine house,
and when thou walkest by the way,
and when thou liest down,
and when thou risest up.
5. To be prepared to share the Gospel
But sanctify the Lord God in your hearts:
and be ready always to give an answer to
every man that asketh you a reason of the hope that is in you
with meekness and fear:
1 Peter 3:15
We are commanded to put on the armour of God which includes putting on shoes of preparation to share the Gospel. Ephesians 6:15 says "And your feet shod with the preparation of the gospel of peace." Memorization is one way to be prepared to share the Gospel.
That you may answer. Proverbs 22:20-21 says "Have not I written to thee excellent things in counsels and knowledge, That I might make thee know the certainty of the words of truth; that thou mightest answer the words of truth to them that send unto thee?"
6. To overcome our own will
Then I said, I will not make mention of him,
nor speak any more in his name.
But his word was in mine heart
as a burning fire shut up in my bones,
and I was weary with forbearing, and I could not stay.
In this time of Jeremiah's life, God's word had been made a "reproach" and a "derision" daily. So Jeremiah had a bad attitude and decided that he was no longer going to speak out for God. But God's word was burning inside him, and he could not stay silent.
If you are ready to start memorizing, here is a good memorization plan that will help you to get started.Other resources: The Walking Bible