The impression of a coloured picture is generally done according to a process called quadrichromy.
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The law of the Lord is perfect, reviving the soul. The statutes of the Lord are trustworthy, making wise the simple. The precepts of the Lord are right, giving joy to the heart. The commands of the Lord are radiant, giving light to the eyes. Psalm 19, 8 & 9
Let us open a magazine. A strong magnifying glass can enable us to check that the illustrations are actually composed of the juxtaposition of a multitude of small points of such called primary colors: yellow, red, blue and black. The printer uses four plates of the same subject, obtained through the corresponding filters. Unequally distributed and mixed, these tiny points reconstitute the original plate.
This technique helps us to understand why the Holy Spirit has given us four gospels. Even in human biographies, we notice that. Two different authors tell the life of the same person, one will talk for example about his family life whereas the other presents his professional activity. We will have to read the two works to get to know the described person well.
John speaks about Jesus as being the Son of God, Luke talks about his humanity, Matthew presents him as the King of Israel and Marc speaks about the servant of the multiple needs of the sinners. These various points of view while being superimposed enable us to always get to know him better and love him such as he is presented to us. This diversity emphasizes the richness of the Scripture.
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