These scriptures come to mind that can help me to answer this question:
My brother referred to these words of Jesus:
3 This means everlasting life, their coming to know you, the only true God, and the one whom you sent, Jesus Christ.
Coming to know our Creator, who is Jesus' God and Father, and Jesus Christ himself, is necessary because this is how we get everlasting life.
But the Israelites of Moses' day knew that their God is a living God, but they were not willing to pattern their lives according to that knowledge. So an indication that we have a knowledge of God that leads to everlasting life is the way that we live our lives.
These verses also indicate that there is a limit to which humans can know or understand Jehovah:
5 God thunders with his voice in a wonderful way;
He does great things that are beyond our understanding.
23 Understanding the Almighty is beyond our reach;
He is great in power,
And he never violates his justice and abundant righteousness.
11 He has made everything beautiful in its time. He has even put eternity in their heart; yet mankind will never find out the work that the true God has made from start to finish.
Isaiah 55:8, 9
8 “For my thoughts are not your thoughts,
And your ways are not my ways,” declares Jehovah.
9 “For as the heavens are higher than the earth,
So my ways are higher than your ways
And my thoughts than your thoughts.
1 Corinthians 2:16
16 For “who has come to know the mind of Jehovah, so that he may instruct him?” But we do have the mind of Christ.
(See also Romans 11:34, where Paul quotes Isaiah 40:13 a second time)
So, another way is by getting to know “the mind of Christ,” who is “the image of the invisible God.” (Col. 1:15) Jesus' example is one that we need to follow in thinking and actions.
We can also draw closer to Jehovah by showing regard for and paying attention to his activities as recorded in his Word, the Bible. By taking time to study Bible accounts and to meditate on them, we can begin to understand Jehovah’s qualities and his way of thinking.