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Prayer is a request and not stories you tell to God. Like saying blessed Holy Mary mother of Christ prayer for us, God already knows that which is in your heart, all we have to do it to be the one to pray and not commanding mother of God to pray go us. Mary have Dead and haven't raise from the dead, so how can she pray for you Even for the sinners. By prayer and supplication with Thanksgiving let your request be made know unto God. Still on prayer, like I said before prayer is the way we communicate with God almighty in heaven.
God want all of us to be saved that is why he replaces our heart and this is if we can only believe in God. The church is composed of not only people of God but is also compose with people but good and evil. God is almighty and replaces our heart with things.
It is good to practice the doctrine of Christ but before this we have to learn the doctrines. If we believe in God and practice the doctrine of Christ he will change our heart and our being as beings. Generally our heart can be replaced by God and even our spiritual being.
Some bible verse read
Ezekiel 36:28
I Timothy 2:4
Mark 11:24
Acts 1:24
Matthew 12:33
Galatians 5:19-21
Proverbs 31:26