"Conversion is a process, not an event. You become converted as a result of your righteous efforts to follow the Savior" (True to the Faith, p. 41). Mormons continue the process of conversion by being worthy: by remaining strong in keeping their covenant promises and following all the commands and ordinances of the Church. "Because conversion is a quiet, constant process, you may be converted now and not realize it" (True to the Faith, p. 41).
Biblical Christianity teaches that conversion is not a process, but an event. It is the moment when a person is brought to faith in Jesus by the Holy Spirit (1 Corinthians 12:3). St. Paul’s conversion (Acts 9) is an example of all conversions (1 Timothy 1:15-16).