Exodus 20:3-17 & Deuteronomy 5:7-21
Westminster Shorter Catechism (Q 42 & 82)
Q - What is the sum of the ten commandments?
A - The sum of the ten commandments is, to love the Lord our God with all our heart, with all our soul, with all our strength, and with all our mind; and our neighbor as ourselves.
Q - Is any man able perfectly to keep the commandments of God?
A - No mere man, since the fall, is able in this life perfectly to keep the commandments of God, but does daily break them, in thought, word, and deed.