Presumption: overstepping due bounds, taking liberties. - Merriam Webster Dictionary
Grace invites presumption as surely as security invites carelessness. Be careful that you do not allow your understanding of grace to lead you into presumption.
God said, “Speak to that rock before their eyes and it will pour out its water. You will bring water out of the rock for the community so they and their livestock can drink.” So Moses took the staff from the Lord’s presence, just as he commanded him. He and Aaron gathered the assembly together in front of the rock and Moses said to them, “Listen, you rebels, must we bring you water out of this rock?” Then Moses raised his arm and struck the rock twice with his staff. Water gushed out, and the community and their livestock drank. But the Lord said to Moses and Aaron, “Because you did not trust in me enough to honor me as holy in the sight of the Israelites, you will not bring this community into the land I give them.” (Numbers 20:8-12, NIV)
Keep back your servant also from presumptuous sins; let them not have dominion over me! Then I shall be blameless, and innocent of great transgression. (Psalm 19:13, ESV)
Do you presume on the riches of his kindness and forbearance and patience, not knowing that God's kindness is meant to lead you to repentance? (Romans 2:4, ESV)