حصل على درجة البكالوريوس في اللاهوت وتخصص في الدراسات الكتابية من كلية اللاهوت الكاثوليكية في ملبورن، أستراليا
الأب ماهر متزوج من السيدة رشا صفار وأنجبا أربعة أطفال، منهم ولدان ياشوا ويشوع ولكنهم الان مع يسوع، ومن ثم رزق ببنتين هن مريم وروزاري
عمل الاب ماهر كمرشد روحي في السجن، حيث عمل مع الأفراد الذين يعانون من: الآثار الجسدية والعقلية المؤلمة، وعمل أيضًا كمساعد رعوي، وكانت واجباته العمل مع الشباب في الكنيسة
كانت مهام الأب ماهر هي إنشاء مجموعة شبابية والعمل مع الشباب في كنيسة مريم العذراء حافظة الزروع فكانت ولادة اخويات للشبيبة عدة واللغة الإنكليزية والكلدانية
He studied in Coolaroo South Primary School from 1992 to 1996, then went to high school from 1997 to 2002.
Fr. Mahir has a bachelor degree in Theology and a major in biblical studies from Catholic Theological College in Melbourne, Australia.
Fr. Mahir had a profound encounter in his dream with Our Lord Jesus on the 5th of May 2007.
Fr. Mahir got married to Rasha Saffar and have four children, they had two boys Yeshua and Joshua who are with Jesus and two girls Maryam and Rosary who are with them.
Fr. Mahir worked as a Prison Chaplain, working with individuals with: physical, mental and ongoing effects of traumatic experiences, he also worked as a Pastoral Associate, his duties were working with young people in church. Fr. Mahir tasks were to create youth group and working with young people. Fr. Mahir worked as a Tertiary Chaplain, walking beside people for short or longer periods, and being prepared to offer pastoral support wherever needed, leading prayer and/or meditation, develop formation sessions and be involved in social justice issues. Fr. Mahir was ordained 1st level subdeacon on 16th of January 2012,
On the 9th of May 2021, he was ordained the 2nd level subdeacon,
On the 22nd of July 2022, he was ordained as a deacon,
On the 14th of April 2023, he was ordained into the priesthood.