“Say: The first and foremost testimony establishing His truth is His own Self. Next to this testimony is His Revelation. For whoso faileth to recognize either the one or the other He hath established the words He hath revealed as proof of His reality and truth.
This is, verily, an evidence of His tender mercy unto men. He hath endowed every soul with the capacity to recognize the signs of God. How could He, otherwise, have fulfilled His testimony unto men, if ye be of them that ponder His Cause in their hearts. He will never deal unjustly with any one, neither will He task a soul beyond its power. He, verily, is the Compassionate, the All-Merciful.”
1. His own Self, who He was, His character (His qualities)
2. His Revelation, what He accomplished (His Mission on earth/ the history of His Cause)
3. His Writings are additional evidence because they show who He was as a person, what He taught about God and other things, and what accomplished on His mission.
Matthew 7:15-20
Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.
Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?Even so every good tree bringeth forth good fruit; but a corrupt tree bringeth forth evil fruit.A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit. Every tree that bringeth not forth good fruit is hewn down, and cast into the fire. Wherefore by their fruits ye shall know them.
Fruits: the pleasant or successful result of work or actions:
fruit