Abdallah siblings Sienna, 8, Angelina, 12, and Antony, 13 and their 11-year-old cousin Veronique Sakr were killed when a driver mowed through a group of children in Oatlands.
Samuel William Davidson, 29, was allegedly three times the legal blood alcohol limit when his ute ran into the group of seven children.
Three other children were taken to hospital with serious injuries.
Danny and Leila Abdallah, the parents of Antony, Angelina and Sienna, have spoken about the “heart-wrenching sorrow” they have felt since the tragedy.
In a statement to 7 News, the parents said completely encapsulating the pain they were feeling would require “endless words of despair”.
“Our children are our reason for living. Bringing them up in accordance with the ways of God, teaching them to love, affording them every opportunity and nurturing them into positive and impacting young men and women was, and is our life’s purpose,” they said.
“What is life without your children? How and where do we begin to pick up the pieces so that we may be effective parents to our three remaining angels?
“We start with forgiveness.”
In their statement the grieving parents say they have made the decision to forgive Mr Davidson, stating that his “actions will be met before the earthly and heavenly judge”.
The 29-year-old driver was allegedly three times the legal blood alcohol limit when he drove into the children.
He’s been charged with 20 offences including four counts of manslaughter and is due to next appear in court in April.
“Our faith in Jesus Christ remains the foundation of our family and we believe it will continue to help us through this difficult time,” they said.
“Each day that passes is a day closer to the day we are reunited with our angels. We will look toward this moment; not backwards at yesterday’s pain.”
The couple went on to thank their family, friends and all the people across the country that have offered them support following the crash.
“We are humbled and strengthened by the outpouring of love from each and every one of you. Please continue to join us in prayer during this time,” they said.
“This is a very heavy cross that we’ve been chosen to carry, but it is through God’s love that we keep going.”
A joint funeral will be held for the Abdallah children at the Our Lady of Lebanon Co-Cathedral in Harris Park on Monday morning.
Hundreds of people have visited the crash site since the tragedy to pay their respects and lay flowers.