Here is one:
Matthew 6:5-7
6 But you, when you pray, go into your room, and when you have shut your door, pray to your Father who is in the secret place; and your Father who sees in secret will reward you openly. 7 And when you pray, do not use vain repetitions as the heathen do. For they think that they will be heard for their many words.
And this also speaks against the rosary, which has pagan origins.
Please read the New Testament and base your beliefs and sacraments ONLY on the Bible, and not holy traditions that are not founded on the word of God. Mary is not God. She can't hear you. She can't be everywhere at once like God can. Can you imagine the millions of people all praying to Mary, and she supposedly can hear each one? That is blasphemy if you think that is possible. Only God can do that. So why pray to anything less than God? Jesus has commanded you to stop. Read the letter in Rev. 2 to Thyatira. The pagan goddess and godchild Babylonian Mystery Religion is what is referred to as Jezebel, because the real Jezebel was a high priestess of that evil religion. When paganism became outlawed and Christianity became the "state religion", that is when to help the pagans transition to Christianity they made their goddess, Mary, and her godchild, Jesus. It is not based on scripture, but the devil, and the "depths of Satan."
You can still be a Catholic; just give up what Jesus says to give up, and that is anything to do with praying to Mary and using the rosary. Is that so much to ask?
no it does not, so the only possible pray for a Christian is the Lord’s Prayer? It does not say that, it’s the first but not the only, repetition in prayer does not contradict the rosary, Jesus was opposing repetitive prayer that repetitions within a single prayer and not repeating a whole prayer more than once for He Himself prayed three times in the garden, let this cup pass from me!