Really there's a difference between entity and person then you don't understand God at all.
You know I really get amused when people try to tell me that God is spirit. But I do understand that that's the only way that people can describe God. Even in the scripture it's the only way that they can describe God as spirit. But God is much more than spirit. God is God and there's no real description of that. Remember God created spirits.
God is more than his creation.
To me the term entity is the best way I can describe the individual aspects of God. Others say the three persons in God, but they mean the same to me. Only twice in my life have I experienced the Trinity as One. In both cases it was in spiritual warfare, and it was the Trinity acting against the darkness.
I can say that I've heard the voice of the Trinity in that moment, it was awesome.
The proper term is "attributes of God". To avoid thinking of God with just one attribute, such as "God is love", many illustrate the attributes like the spokes on a wagon wheel. All are needed for a proper view of God. Here are a few, God is:
Just & Holy:
O LORD, God of Israel, you are just, but we have escaped as a remnant, as is now the case. Here we are before you in our guilt, though no one can face you because of this.” (Ezra 9:15, NRSV)
the fear of the LORD is pure, enduring forever; the
ordinances of the LORD are true and righteous altogether. (Ps 19:9, NRSV)
They shall celebrate the fame of
your abundant goodness, and shall sing aloud of
your righteousness. (Ps 145:7, NRSV)
And I heard the altar respond, “Yes, O Lord God, the Almighty,
your judgments are true and just!” (Rev 16:7, NRSV)
Omnipotent:
When Abram was ninety-nine years old, the LORD appeared to Abram, and said to him, “
I am God Almighty; walk before me, and be blameless. (Gen 17:1, NRSV)
But Jesus looked at them and said, “For mortals it is impossible, but
for God all things are possible.” (Matt 19:26, NRSV)
Then I heard what seemed to be the voice of a great multitude, like the sound of many waters and like the sound of mighty thunderpeals, crying out, “Hallelujah! For
the Lord our God the Almighty reigns. (Rev 19:6, NRSV)
Eternal:
God said to Moses, “I AM WHO I AM.” He said further, “Thus you shall say to the Israelites, ‘I AM has sent me to you.’” (Exod 3:14, NRSV)
** Not I have been or was; or will be... but "I AM" always, eternal
Abraham planted a tamarisk tree in Beer-sheba, and called there on the name of the LORD,
the Everlasting God. (Gen 21:33, NRSV)
“I am the Alpha and the Omega,” says the Lord God,
who is and who was and who is to come, the Almighty. (Rev 1:8, NRSV)
Immutability
God is not a human being, that he should lie, or a mortal,
that he should change his mind. Has he promised, and will he not do it? Has he spoken, and will he not fulfill it? (Num 23:19, NRSV)
They will perish, but you endure; they will all wear out like a garment. You change them like clothing, and they pass away; but
you are the same, and your years have no end. (Ps 102:26-27, NRSV)
...I am God, and there is no one like me, declaring the end from the beginning and from ancient times things not yet done, saying,
“My purpose shall stand, and I will fulfill my intention,” (Isa 46:9-10, NRSV)
Every generous act of giving, with every perfect gift, is from above, coming down from
the Father of lights, with whom there is no variation or shadow due to change. (Jas 1:17, NRSV)
In the same way, when God desired to show even more clearly to the heirs of the promise
the unchangeable character of his purpose, he guaranteed it by an oath, (Heb 6:17, NRSV)
Omniscient:
Set forth your case, says the LORD; bring your proofs, says the King of Jacob. Let them bring them, and tell us what is to happen. Tell us the former things, what they are, so that we may consider them, and that we may know their outcome; or declare to us the things to come. Tell us what is to come hereafter, that we may know that you are gods; do good, or do harm, that we may be afraid and terrified. You, indeed, are nothing and your work is nothing at all; whoever chooses you is an abomination. (Isa 41:21-24, NRSV)
The eyes of the LORD are in every place, keeping watch on the evil and the good. (Prov 15:3, NRSV)
Then the spirit of the LORD fell upon me, and he said to me, “Say, Thus says the LORD: This is what you think, O house of Israel; I know the things that come into your mind. (Ezek 11:5, NRSV)
...whenever our hearts condemn us; for
God is greater than our hearts, and he knows everything. (1John 3:20, NRSV)
Spirit:
Since
you saw no form when the LORD spoke to you at Horeb out of the fire, take care and watch yourselves closely, so that you do not act corruptly by making an idol for yourselves, in the form of any figure—the likeness of male or female, the likeness of any animal that is on the earth, the likeness of any winged bird that flies in the air, the likeness of anything that creeps on the ground, the likeness of any fish that is in the water under the earth. (Deut 4:15-18, NRSV)
God is spirit, and those who worship him must worship in spirit and truth.” (John 4:24, NRSV)
Now
the Lord is the Spirit, and where the Spirit of the Lord is, there is freedom. (2Cor 3:17, NRSV)
For those who wish to study on the Attributes of God, you can study them online: