When I consider thy heavens (comp. Psalms 19:1; Psalms 33:6; Psalms 104:2). David, in his shepherd-life, had had abundant opportunity of "considering the heavens," and had evidently scanned them with the eye of a poet and an intense admirer of nature.
It is probably in remembrance of the nights when he watched his father's flock, that he makes no mention of the sun, but only of "the moon and the stars." The work of thy fingers; and therefore "thy heavens."
Often as the "hand of God" is mentioned in Scripture, it is but very rarely that we hear of his "finger" or "fingers." So far as I am aware, the only places are Exodus 8:19; Exodus 31:18; Deuteronomy 9:10; and Luke 11:20.
The moon and the stars, which thou hast ordained (comp. Genesis 1:16).