Examples of using It is the source in English and their translations into Bulgarian
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                        Colloquial
                    
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                        Official
                    
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                        Medicine
                    
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                        Ecclesiastic
                    
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                        Ecclesiastic
                    
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                        Computer
                    
To the  Creation it is the source of life, happiness, and joy.
It is the source of all wise understanding and action.
It is the source of every good thing.
It is the source of procreation.
It is the source of music and it is  music itself.
It is the source of all true art and science.
It is the source of all energy and matter in the  universe.
It is the source of absolute morality.
Historically, it is the source of Quakerism.
It is the source of its profits.
It is the source of terror.
It is the source of our prosperity and social fairness.
It is the source and nucleus from which knowledge
It is the source for a small brook that flows into the  Petrovka River.
It is the source of 98% of our heat.
It is the source of the  painful condition plantar fasciitis.
It is the source of the  flame, but not the  flame itself.
It is the source of the  inner peace that Christ wants to communicate to us.
It is the source of all our enjoyments, the  sum of all our powers.
It is the Source of any truth that exists in the  earth.