Btw, the baptism of babys in national churches which is an "invention" of the catholic church has nothing to do with biblical baptism.Babys don't have the possibility "to decide" to follow the Lord or to refuse this, so this sort of baptism is completely invalid and just a humanly tradition, which has nothing to do with Christianity!

Earlier in the dark ages humans thought after any baptism they're filthy again when they start to sin next time, so they decided to have just one baptism in their life shortly before they to decrease, so they would die before they've a chance to sin again and to need a new baptism (who dies with sins will get the "eternal punishment").The problem was, old humans don't survive so much water when they're weak, so the clergy takes fewer water about the time till the moment when they invented the "infant baptism" which is completely unbiblical, but traditional too, what's the reason because they don't want to discard this.