Is praying the rosary biblical?

from the old testament

• One danger of using the rosary to pray is that one’s prayer life may become ritualistic, losing the heartfelt sincerity that we should have when we come to God in prayer. God spoke against such rote, meaningless worship in the Old Testament (Psalm 40:6-8, 51:16-17; Hosea 6:6).

from the new testament

• Treating prayer as a formula that leads to our intended end or produces a specific benefit if said the correct way the correct number of times completely misunderstands the nature and purpose of prayer (Matthew 6:5-13).
• Jesus’ model prayer, called the Lord’s Prayer, doesn’t include a rosary. Despite providing a sample prayer, Jesus didn’t intend His words to merely be repeated as routine, and in fact, indicated the insincerity of praying like that (Matthew 6:7-15).
• Praying the rosary has been associated with promises like removal of sin, special graces and protection, receiving any request, special standing in heaven, and so on. These promises have no biblical basis, though (Matthew 6:7-8).
• The Hail Mary prayer is based on Luke 1:26-33, when the angel Gabriel appeared to tell Mary that she would become the mother of Jesus, the Savior. Gabriel greets Mary by saying, "Greetings, O favored one, the Lord is with you!" (Luke 1:28). The word "greetings" (chairo in Greek) can also be translated as "hail" or "ave," which has the weight of formality and honor usually reserved for kings. Certain translations of this interaction render it, "Hail Mary, full of grace," which is the basis of the rosary prayer. This type of honor in prayer should go to God, not Mary.
• Jesus modeled an intimate prayer life with God that was not by memorization but through honest, fervent prayers like the one in the garden of Gethsemane (Luke 22:39-46). We should foster meaningful conversation and communication with God that comes from our heart, not merely our head; the rosary encourages ritualistic repetitive prayer, not sincerity.
• Contrary to beliefs surrounding praying the rosary, the removal of sin is only by grace through faith in Jesus Christ (Ephesians 2:4-9). All those who believe in Him are promised the same spiritual protection and grace. Additionally, nowhere are we promised to have our prayers answered exactly how we would like.
• The emphasis on praying to Mary through the rosary is based on an unbiblical belief that she was somehow sinless and so close to God that she could intercede for others. But Scripture is very clear that we have only one mediator and that is Jesus Christ (1 Timothy 2:5).
• The "Hail Mary" and "holy Queen" sections of the rosary, as well as the promised expectations of the rote prayers, do not have any scriptural basis. In fact, praying to Mary is directly against the Bible's teaching. Our prayer should only ever be directed to God (Hebrews 4:14-16; 7:25; 10:19-22).

implications for today

Historically, the Roman Catholic Church intended the rosary to be an affordable way to teach and recite prayers. During medieval times, many faithful could not afford a Psalter (a written collection of the Psalms) or were entirely illiterate. Traveling priests would use strings of beads to help people memorize and recite Scripture. It grew from there to encompass prayers associated with the life of Jesus. As a tool to teach prayer and meditation, the original intentions and uses of the rosary were in line with Scripture. While it is not wrong to pray the prayers we see in Scripture or other biblically-sound, pre-written prayers, we must pray with our minds and our hearts (1 Corinthians 14:15; John 4:24), actually communicating with our heavenly Father, not merely reciting words. All the spiritual blessings and inheritance of faith we enjoy are because of and through Jesus Christ, the only Savior (Ephesians 1:3-14). Our prayers should reflect the knowledge of this truth and as such, should be directed to God alone.