What does"God is Truth" mean, please explain :)?

If you are talking abut John 14:6 when Jesus says "I am the truth the light and the way." Jesus is saying that only through Him can you be saved. There will be other religions claiming to be the way but He is the true way.

I'm not sure what you are asking when you say "God is truth"?

Bg 2.16 — Those who are seers of the truth have concluded that of the nonexistent [the material body] there is no endurance and of the eternal [the soul] there is no change. This they have concluded by studying the nature of both.

Bg 2.17 — That which pervades the entire body you should know to be indestructible. No one is able to destroy that imperishable soul.

Bg 2.18 — The material body of the indestructible, immeasurable and eternal living entity is sure to come to an end; therefore, fight, O descendant of Bharata.

Bg 2.19 — Neither he who thinks the living entity the slayer nor he who thinks it slain is in knowledge, for the self slays not nor is slain.

Bg 2.20 — For the soul there is neither birth nor death at any time. He has not come into being, does not come into being, and will not come into being. He is unborn, eternal, ever-existing and primeval. He is not slain when the body is slain.

Bg 2.21 — O Pārtha, how can a person who knows that the soul is indestructible, eternal, unborn and immutable kill anyone or cause anyone to kill?

Bg 2.22 — As a person puts on new garments, giving up old ones, the soul similarly accepts new material bodies, giving up the old and useless ones.

Bg 2.23 — The soul can never be cut to pieces by any weapon, nor burned by fire, nor moistened by water, nor withered by the wind.

Bg 2.24 — This individual soul is unbreakable and insoluble, and can be neither burned nor dried. He is everlasting, present everywhere, unchangeable, immovable and eternally the same.

Bg 2.25 — It is said that the soul is invisible, inconceivable and immutable. Knowing this, you should not grieve for the body.

Bg 2.26 — If, however, you think that the soul [or the symptoms of life] will always be born and die forever, you still have no reason to lament, O mighty-armed.

Bg 2.27 — One who has taken his birth is sure to die, and after death one is sure to take birth again. Therefore, in the unavoidable discharge of your duty, you should not lament.

Bg 2.28 — All created beings are unmanifest in their beginning, manifest in their interim state, and unmanifest again when annihilated. So what need is there for lamentation?

Bg 2.29 — Some look on the soul as amazing, some describe him as amazing, and some hear of him as amazing, while others, even after hearing about him, cannot understand him at all.

Bg 2.30 — O descendant of Bharata, he who dwells in the body can never be slain. Therefore you need not grieve for any living being.

In a way it is both symbolic and real God's power is in his word or words what he says is no mater what. just as a Carpenter's power is building a doctor's is healing and so on what ever God says is true.

It means, "I have no idea what I'm talking about, nor do I have any evidence that my position is correct, but I want to say something that sound profound so I am going to say 'God is Truth' and then attack anyone who disagrees with me"

God is the only Reality. That which seems to be not God is not real. God is Truth, in that, that is all there is. There is nothing but God.

Peace and Namaste!

It's the way the bibull is written. No logic or proof.

UNDENIABLE