An angel visits a young woman and she conceives a child as a Virgin. A miracle.
A Man is crucified and dies horribly yet three days later He is raised from the dead. Another miracle.
The whole of Christ's life, as described in the Gospels, is studded with miracles He performed for the benefit of others. From changing water to wine, to feeding the thousands, to the many healing miracles and raising of the dead. Jesus performed miracles, not just to help people in need, but also to glorify God and underline His Divinity.
After Christ was raised to Heaven, another miracle, we learn that the disciples and the first Christians performed many healing miracles.
Even before Jesus came to earth, we learn from the Old Testament of many miracles performed by God for His people. The parting of the sea for Moses and his people to cross over to safety. Feeding the Israelites with manna from Heaven on their exodus journey. Water flowing from the rock. People healed. Raising of the dead. And so on.
Today, sadly, many people have become sceptical. Including Christians. Many doubt that miracles happen at various shrines throughout the world. Places like Lourdes, Knock, Fatima and so on. Some Christians would mumble and say it is "unexplained" or a "mystery" rather than proclaim or say outright that miracles do happen.
Yes today ... now ... to any of us. Anywhere. You don't need to go to a shrine for a miracle to happen. Miracles can happen everywhere. At home, in church, in a hospital, anywhere. To anyone.
As long as we believe.