Psalms 51 ... "Create in me a clean heart ...." -- keeps me penitent.
Philippians 3:7-14 " That I may know Him" -- expresses my desire, thirst and hunger to know him intimately.
Romans 8 - just read it all.... this passage and
Romans 4 changed history as we know it.
1 John 5 - clarifies John's writing in his gospel about what it means to be born again.
Matthew 22:37-38 ... Keeps it simple.
He said to him,
22 "You shall love the Lord, your God, with all your heart, with all your soul, and with all your mind. 38 This is the greatest and the first commandment. 39 The second is like it:
23 You shall love your neighbor as yourself.