Can you keep all this perfectly?

Heidelberg Catechism

Question 5. Can you keep all this perfectly?

Answer. No,[1] for I am prone by nature to hate God and my neighbor.[2]

[1] Rom 3:10-12, 23; 1 Jn 1:8, 10;
[2] Gen 6:5, 8:21; Jer 17:9; Rom 7:23, 8:7; Eph 2:3; Tit 2:3