faithful and unchanging:
enlarge our minds with the knowledge of your truth,
and draw us more deeply into the mystery of your love,
that we may truly worship you,
Father, Son and Holy Spirit,
one God, now and for ever.
‘Again, you have heard that it was said to those of ancient times, “You shall not swear falsely, but carry out the vows you have made to the Lord.” 34But I say to you, Do not swear at all, either by heaven, for it is the throne of God, 35or by the earth, for it is his footstool, or by Jerusalem, for it is the city of the great King. 36And do not swear by your head, for you cannot make one hair white or black. 37Let your word be “Yes, Yes” or “No, No”; anything more than this comes from the evil one.
from Psalm 16
The Lord himself is my portion and my cup;
in your hands alone is my fortune.
My share has fallen in a fair land;
indeed, I have a goodly heritage.
I will bless the Lord who has given me counsel,
and in the night watches he instructs my heart.
I have set the Lord always before me;
he is at my right hand; I shall not fall.