رِسَالَةُ يُوحَنَّا ٱلرَّسُولِ ٱلْأُولَى 5:8

وَٱلَّذِينَ يَشْهَدُونَ فِي ٱلْأَرْضِ هُمْ ثَلَاثَةٌ: ٱلرُّوحُ، وَٱلْمَاءُ، وَٱلدَّمُ. وَٱلثَّلَاثَةُ هُمْ فِي ٱلْوَاحِدِ.

And there are three that bear witness in earth, the Spirit, and the water, and the blood: and these three agree in one.