First Reading 1 Kings 19:19-21
And Elias departing from thence, found Eliseus the son of Saphat, ploughing with twelve yoke of oxen: and he was one of them that were ploughing with twelve yoke of oxen: and when Elias came up to him, he cast his mantle upon him. And he forthwith left the oxen and ran after Elias, and said: Let me, I pray thee, kiss my father and my mother, and then I will follow thee. And he said to him: Go, and return back: for that which was my part, I have done to thee. And returning back from him, he took a yoke of oxen, and killed them, and boiled the flesh with the plough of the oxen, and gave to the people, and they ate: and rising up he went away, and followed Elias, and ministered to him.
Responsorial Psalm Ps 16:1b-2a, 5, 7-8, 9-10
The inscription of a title to David himself. Preserve me, O Lord, for I have put my trust in thee. I have said to the Lord, thou art my God, for thou hast no need of my goods.
The Lord is the portion of my inheritance and of my cup: it is thou that wilt restore my inheritance to me.
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.
Therefore my heart hath been glad, and my tongue hath rejoiced: moreover my flesh also shall rest in hope. Because thou wilt not leave my soul in hell; nor wilt thou give thy holy one to see corruption.
Gospel Matt 5:33-37
Again you have heard that it was said to them of old, Thou shalt not forswear thyself: but thou shalt perform thy oaths to the Lord. But I say to you not to swear at all , neither by heaven, for it is the throne of God: Nor by the earth, for it is his footstool: nor by Jerusalem, for it is the city of the great king: Neither shalt thou swear by thy head, because thou canst not make one hair white or black. But let your speech be yea, yea: no, no: and that which is over and above these, is of evil.