In reality, every believer who wants to remain relevant in their faith continues to grow in their relationship with Jesus. Apollos was considered a learned believer with a thorough knowledge of scripture, but who did not know about believer's baptism. The Bible says simply that he was instructed more adequately. Apollos is a good example of how a believer should continue to learn and grow in his faith - regardless of the topic or issue. We do not practice infant immersion since an infant does not have the cognitive abilities to repent and believe.
Crossroads practices believers baptism.
This practice became common because of the development and misinterpretation of two doctrines. The other misinterpretation had to do with the doctrine of original sin. Therefore, if a child died, he was doomed to an eternity without Christ. Since this man driven doctrine teaches that baptism actually saved the candidate, they began to do the next logical thing, they baptized babies. A sacrament is thought to be a channel through which God bestows grace upon the candidate.