Here is something I wrote down a number of years ago, which may help:
What is Church [Ekklesia]?
God can come to us alone in our closet with Him in prayer, but a very precise promise is given to us by Jesus in these words:
"For where two or three are gathered together in my name, there am I in the midst of them." Matt 18:20
When we are gathered in his name, He is there with us. Not less than two in this promise. What is a Church or the Church? The word usually translated as church is ekklesia, an assembly of people. This is plural, not singular.
The prophet Elijiah went away alone and presumptuously indicated that he was the only one of God's side. God set him straight on that advising that 7000 in Israel had not bent their knee to Baal.
We should never presume that "I" am the only one close to God that alone "I" am able to draw as close to God as I need to get.
We must come together "in his name", whether it is in a building designated as a church or it is in a home or it is on a street corner or it is on an Internet forum.
Why?
One reason is for strength and mutual comfort.
"Two are better than one; because they have a good reward for their labour. For if they fall, the one will lift up his fellow: but woe to him that is alone when he falleth; for he hath not another to help him up. Again, if two lie together, then they have heat: but how can one be warm alone? And if one prevail against him, two shall withstand him; and a threefold cord is not quickly broken." Ecc 4:9-12
A second reason is as per the 1st verse I quoted above: To assure that He is in our midst. [Without Him in our midst we have no more that secular social gathering]
A third reason is that we are to be a Body of members, not individuals flying with the Lord alone.
"For the body is not one member, but many.
If the foot shall say, Because I am not the hand, I am not of the body; is it therefore not of the body?
And if the ear shall say, Because I am not the eye, I am not of the body; is it therefore not of the body?
If the whole body were an eye, where were the hearing?
If the whole were hearing, where were the smelling?
But now hath God set the members every one of them in the body, as it hath pleased him.
And if they were all one member, where were the body?
But now are they many members, yet but one body.
And the eye cannot say unto the hand, I have no need of thee: nor again the head to the feet, I have no need of you.
Nay, much more those members of the body, which seem to be more feeble, are necessary:" I Cor 12:14-22
As the natural body of each of us has many members joined together and working together to accomplish the purposes of the whole, so is the Body of Christ.
"For to one is given by the Spirit the word of wisdom;
to another the word of knowledge by the same Spirit;
To another faith by the same Spirit; to another the gifts of healing by the same Spirit;
To another the working of miracles; to another prophecy; to another discerning of spirits; to another divers kinds of tongues; to another the interpretation of tongues:
But all these worketh that one and the selfsame Spirit, dividing to every man severally as he will.
For as the body is one, and hath many members, and all the members of that one body, being many, are one body: so also is Christ." I Cor 12:8-12
Alone, we cannot be a part of the Body of Christ and this means not Jesus alone or with God alone or with the Holy Ghost alone... but with other individuals like you and like me: the Church [Ekklesia]!