A very plain and well grounded treatise concerning baptisme : Wherein it is very cleerly shown, and out of good grounds demonstrated that baptisme was instituted and ordained by the Lord Christ, for those that believe and repent, and was so taught and used by his apostles, and observed and followed by the primitive church. As also how in processe of time the baptisme of children in stead of true baptisme was brought in and received, and by divers councels, Popes, and emperours commanded to be observed.