The predominant meaning of the Greek word for ‘baptize’ means “to dip or to plunge under water.”
The mode that best preserves and represents the meaning and symbolism inherent in baptism is immersion (completely submerging the candidate under the water) then raising them upright out of the water.
As Christ was laid in a tomb after His death, the new Believer is lowered under the water. And as Christ rose from the dead after three days, so too the Believer is raised upright out of the water to ‘walk in newness of life’.