Is it ok to memorize a prayer and say it each time?
Here's the answer:
Prayer is simply talking to God. He wants you to pray with a sincere heart.
If you memorize a prayer and repeat it over and over, you may not be having a real conversation with God. Sometimes when we use a memorized prayer, we don't mean the words we are saying. Or maybe we quit thinking about what they mean and just say the words.
"Don’t worry about anything. No matter what happens, tell God about everything. Ask and pray, and give thanks to Him" (Philippians 4:6).
Think about how you talk to your friends and family. You tell them about the worries you have, you ask them for the things you need or want, and you thank them for the things they have done for you. Prayer with God is just like that – simply talking with your loving Father. God already knows everything about you, but He wants you to get to know Him more through prayer. God wants you to share your heart with Him and let Him speak back to you through the Holy Spirit as you pray.
It is useless to memorize a prayer and recite it over and over if we do not really mean the words we are saying. God knows all our thoughts, so we should be honest with Him and speak what we are truly thinking.
"When you pray, go into your room. Close the door and pray to your Father, who can’t be seen. Your Father will reward you, because He sees what you do secretly. When you pray, do not keep talking on and on. That is what ungodly people do. They think they will be heard because they talk a lot" (Matthew 6:6-7).