For Melanchthon's argument, see his Initia in Opera, vol.
For Melanchthon's ideas on physics, see his Initia Doctrinae Physicae, Wittenberg, 1557, especially pp.
This faith is preceded by certain preliminary conditions, of which the first is an illumination of the intellect and a strengthening of the will, which results in the affectus credulitatis (initia fidei).
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "initia" in a variety of sentences. We hope that you will now be able to make sentences using this word.