The answer
If someone leaves the Christian faith, we will pray that God will enlighten his/her heart once again. Throughout the Old Testament and Christ in the New Testament, there is no evidence found anywhere to support that God ever imposed Himself upon anyone. Thus, as Christians, we follow Him and likewise would never force anyone to remain Christian if he/she chooses to leave on their own.
Answered by His Eminence Metropolitan Youssef (opens in a new tab)