Repentance means that we realize both the holiness of God's law and our inability to keep it. Repentance is a deliberate, willful turning away from sin and following after God. True repentance always leads to a change in conduct or attitude. When we think of the word conversion we may think of things such as a conversion van. As in the case of the aforementioned van, the process of conversion has aspects of change and a new existence in the same shell or body.
Conversion is a change or a turning point in the life of the believer.
Before conversion we walk according to our own will and wisdom. After conversion we follow the will of our Lord Jesus and defer to His wisdom. Conversion means commitment to God in response to mercy from God, and consists of repentance and faith. It need not be dramatically sudden or emotional, nor does one have to be fully aware of what is happening, although a conscious conversion usually proves to be a blessing to the believer. God is still sending His messengers today to provide the light of the gospel to a world in darkness.