Covenants have provisions to be kept and commands to be obeyed. Scriptures like Deuteronomy 28, Psalm 19 and 89, Hebrews 6 and 12, and other places, warn us of the dangers of violating the covenant provisions. The penalties can be devastating. For instance, Paul warns that some have died because they abused the Lord's Table. Covenant abuse can release covenant penalties.
Presumption is a sin.
Presumption causes us to assume that God's love will cover our willful abuse of His purpose and His grace. Presumption brings punishment. We must not believe that we are chosen for reasons of superiority. God's will is quite the opposite. This is a critical question.