For it is by grace you have been saved, through faith and this is not from yourselves, it is the gift of God.
Ephesians 2:8 (NIV)

Through faith, we have access. Faith keeps the door of grace open. What will shut the door of grace is if we withdraw from faith. Faith gives you open door into the fullness of Divine providence. Walking in faith keeps heaven's door open. Grace means: storehouse.  By faith  we have access to Heaven’s resources. Everything that Jesus has made available to humanity through His crucifixion, death, resurrection and ascension is accessible to anyone who believes. The Law came by Moses but grace came by Jesus Christ. Out of His fullness have we all received grace for grace. Be comforted.