I love what the Catholic Catechism says about the saints.
“The witnesses who have preceded us into the kingdom, especially those whom the Church recognizes as saints, share in the living tradition of prayer by the example of their lives, the transmission f their writings, and their prayer today. They contemplate God, they praise him and constantly care for those whom they have left on earth. When they entered in the joy of their Master, they were ‘put in charge of many things.’ Their intercession is their most exalted service to God’s plan. We can and should ask them to intercede for us and for the whole world” (CCC #2683)