Christian teachings certainly have levels of importance. When a scribe asked Jesus which commandment was the most important, He replied,
“Hear, O Israel: The Lord our God, the Lord is one. And you shall love the Lord your God with all your heart and with all your soul and with all your mind and with all your strength.” The second is this: “You shall love your neighbor as yourself.” There is no other commandment greater than these (Mark 12:28-31 quoting Deuteronomy 6:4-5; Leviticus 19:18).
The one God is the most important Person. Loving Him is our highest duty and privilege. All else is secondary. Jesus clashed with the scribes and Pharisees because they ignored the Law’s greater principles while they concentrated on lesser details.
[You] have neglected the weightier matters of the law: justice and mercy and faithfulness. These you ought to have done, without neglecting the others (Matthews 23:23).
“You have neglected the weightier matters of the Law.”
Every word of God is inspired and valuable (Matthew 4:4; 2 Timothy 3:16). But that same word shows that the Gospel has its most important matters (1 Corinthians 15:3).