Nisi Dominus. Nothing can be done without God's grace and blessing.

 1 Unless the Lord build the house, they labour in vain that build it. Unless the Lord keep the city, he watcheth in vain that keepeth it.  2 It is vain for you to rise before light, rise ye after you have sitten, you that eat the bread of sorrow. When he shall give sleep to his beloved,  3 Behold the inheritance of the Lord are children: the reward, the fruit of the womb.  4 As arrows in the hand of the mighty, so the children of them that have been shaken.  5 Blessed is the man that hath filled the desire with them; he shall not be confounded when he shall speak to his enemies in the gate.

[2] "It is vain for you to rise before light": That is, your early rising, your labour and worldly solicitude, will be vain, that is, will avail you nothing, without the light, grace, and blessing of God.