Whosoever believeth that Jesus is the Christ, is born of God. And every one that loveth him who begot, loveth him also who is born of him. In this we know that we love the children of God: when we love God, and keep his commandments. For this is the charity of God, that we keep his commandments: and his commandments are not heavy. For whatsoever is born of God, overcometh the world: and this is the victory which overcometh the world, our faith. Who is he that overcometh the world, but he that believeth that Jesus is the Son of God?
Responsorial Psalm: cf. Psalm 16 (15):5a; V. 1-2a and 5, 7-8, 11
R. The Lord is the portion of my inheritance and of my cup:V. Preserve me, O Lord, for I have put my trust in thee.I have said to the Lord, thou art my God,The Lord is the portion of my inheritance and of my cup:it is thou that wilt restore my inheritance to me.V. I will bless the Lord, who hath given me understanding:moreover my reins also have corrected me even till night.I set the Lord always in my sight:for he is at my right hand, that I be not moved.V. Thou hast made known to me the ways of life,thou shalt fill me with joy with thy countenance:at thy right hand are delights even to the end.
Gospel Reading: Matthew 22:34-40
But the Pharisees hearing that he had silenced the Sadducees, came together: And one of them, a doctor of the law, asking him, tempting him: Master, which is the greatest commandment in the law? Jesus said to him: Thou shalt love the Lord thy God with thy whole heart, and with thy whole soul, and with thy whole mind. This is the greatest and the first commandment. And the second is like to this: Thou shalt love thy neighbour as thyself. On these two commandments dependeth the whole law and the prophets.
The readings from the USCCB can be found here.