For example, if we think of the Gospel as mainly information, then we become lawyers and modern Pharisees who argue semantics and debate doctrine. Salvation is seen as having the right information - the right beliefs and doctrines, in the right order. Those who have different information than we do are heretics. Those who accept our information are "saved" and those who don't are either not truly Christians or their salvation is in question.
But Jesus speaks of a Gospel that is based on an intimate relationship with himself. He talks about the Gospel as being primarily about transformation, not mere information.
He proclaims the Good News [Gospel] of the Kingdom by urging everyone to "think different" [Metanoia in the Greek; usually translated as "Repent!" in most English translations].
Jesus says that life in the Kingdom comes when we "know God and the Christ whom He has sent" [John 17:3]
That word translated "know" is not about information. It's the same word used to say that "Adam 'knew' Eve" and that involves an intimacy; a way of knowing that conceives new life within.
So, we are called to "know God" and to "know Christ" in an intimate way that conceives a new life within us - the new life of the Kingdom that comes only as we abide in Him and He abides in us.
"Beloved, we are God's children now, and what we will be has not yet appeared; but we know that when he appears we shall be like him, because we shall see him as he is." [1 Jn. 3:2]