God_Is_Truth said:
if there is a risk of someone losing salvation after conversion, isn't it in their best interest to be killed immediately after they believe to ensure they go to heaven and don't become apostate?
Along the same line of reasoning, is it not better for God to not create so no one goes to hell forever, or for God to kill all children before they have moral and mental capacity to reject Him?
There is no need for anyone to not be saved or to continue to be saved once they are saved. His grace is sufficient. Unfortunately, the heart of man is fickle and selfish rebellion can undermine the ministry of the Spirit to initially save or forever keep someone.
In God's wisdom, the risk must have been worth it to create us and to not coerce salvation initially or in the end. God's love, truth, holiness, justice, mercy, etc. come into play. The alternative was to create robots, not free moral agents. I do not perceive we lose free moral agency once we are saved. Israel, the people of God, rebelled. Not all in Israel were saved in the end. Some were seduced by pagan nations. Not everyone who started to follow Jesus, kept following Jesus.
God's purpose in saving us goes beyond a ticket to heaven. There is a life to live and a purpose in His kingdom. To kill us off at conversion would violate His character and ways. Love without testing is sentimental. God is a calculated risk taker. He does not have to control the outcome to remain sovereign or good. If we fall away, it is strictly our fault and was unnecessary and the height of selfish stupidity. It is not an isolated lapse. It is a progressive, final, defiant renunciation against great light.
Most of us know of people who we did not doubt their salvation for years. They may even be family members. Some are now far from God. Many will return to Him, but not all will. If someone who once served God renounces Christianity and becomes a gay Satan worshipper (possible), then if they persist in this state, I see no logical or biblical reason why they might not have been saved in the past or why they should be called saved now just because they were in the past.