Question:  I prayed a prayer of salvation at the age of 7 and was baptized.  I have since then questioned whether or not I truly understood enough to have genuinely been saved.  Should I be re-baptized now that I know that I am a Christian?

If you truly came to Christ after your first baptism, I would highly encourage you to be re-baptized.  Every baptism recorded in the New Testament followed conversion.  New Testament baptism comes after one’s decision to follow Christ as a symbol of what God has done inside that person’s heart and life.  Baptism has no saving value–it is only a symbol.  However it is a powerful symbol, a wonderful testimony of God’s work in you.