Some preachers say to sinners ‘give your life to Christ’ and be saved.’ What kind of life does an unbeliever have to give to God? What kind of life is worth giving to God? Salvation is by grace, not by works that generates boasting.
If you give your life to Christ to receive eternal life then you need to give something to God to sustain the life you received in exchange as well as receive the things that accompany salvation such as healing, promotion, success, and protection.
“Give your life to Christ” is not an apostolic doctrine; it is a doctrine of the Nicolaitans that Jesus hates.