There is a difference in knowing God and knowing about God. Most people know about God from things they have observed or heard. Your parents may have talked to you about God. You may attend church and hear a sermon about God. However, knowing about God is not knowing God today.
Know God by faith. He who comes to God must believe (Hebrews 11:6). We cannot come to God any other way. Because God is Spirit, you cannot see Him (John 4:24). Only faith can usher us into the presence of God.
Know God through your heart. The heart is your mind, will, and emotions. God changes our hearts through the gospel of Jesus Christ, enabling our faith to know God the Father through the Son (John 14:6). We know God by looking unto Jesus, the author and finisher of our faith (Hebrews 12:2).
Know God in a personal relationship. We walk with God by faith. For we walk by faith, not by sight (2 Corinthians 5:7). Faith assures us that God is with us, and all the time. Faith is the assurance that God hears our prayers. Faith is the evidence. When we know God, faith is the evidence of things not seen (Hebrews 11:1).