None who were serious in following Him were told to step forward to distinguish themselves from the rest. Nevertheless, He did call the twelve disciples individually to join His cause to change the world.
The practice of making altar calls is part of church culture, whether charismatic or non-charismatic. As there is a need to identify positive respondents for the purposes of follow-up (salvation cases) and training (rededication cases), there is apparently little harm in making altar calls.
The disciples were personally challenged by Jesus to leave their trade and follow Him. Peter preached a powerful message at Pentecost, resulting in thousands streaming into God’s kingdom. And we are told that we must not be ashamed of Jesus, implying that we must publicly declare our faith and allegiance to Him. Even so, we cannot find an unequivocal argument for making altar calls. In fact, the Bible does not make a clear and convincing case for or against it.