God is the author of knowledge and understanding. It is God who is able to open up our minds to be able to understand the Bible or anything that He is teaching us. Sometimes we may not get a specific scripture and that is okay because Jesus can give us the knowledge we need to be able to understand:
“44 And he said unto them, These are the words which I spake unto you, while I was yet with you, that all things must be fulfilled, which were written in the law of Moses, and in the prophets, and in the psalms, concerning me. 45 Then opened he their understanding, that they might understand the scriptures, 46 And said unto them, Thus it is written, and thus it behooved Christ to suffer, and to rise from the dead the third day:47 And that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem.” Luke 24:44-47
When Jesus was Transfigured on the mountain with Moses and Elijah the vision was so intense that Peter did not understand what he was even saying to Jesus and the voice of God came from Heaven and opened their understanding:
“33 And it came to pass, as they departed from him, Peter said unto Jesus, Master, it is good for us to be here: and let us make three tabernacles; one for thee, and one for Moses, and one for Elias: not knowing what he said. 34 While he thus spake, there came a cloud, and overshadowed them: and they feared as they entered into the cloud. 35 And there came a voice out of the cloud, saying, This is my beloved Son: hear him.” Luke 9:33-35
When God gives us understanding He makes our hearts right towards what pleases Him and what does not please Him. True Christians will hate sin and false religions and all the works of the devil.
“I understand more than the ancients, because I keep thy precepts.” Psalms 119:100
“Through thy precepts I get understanding: therefore I hate every false way.” Psalms 119:104
Knowledge is a gift of the Holy Spirit.
“For to one is given by the Spirit the word of wisdom; to another the word of knowledge by the same Spirit;” 1 Corinthians 12:8
If we do no understand a Bible verse or something about God we can ask Him to increase our understanding. It is when we admit that we do not know something when God can teach us, God loves a humble heart and the Bible says He gives grace to the humble. Know it alls and people that rely on doctrines of men, worldy wisdom and science will not be able to understand any of this.
“But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.” 1 Corinthians 2:14