The Hebrew word "codesh" is translated in the KJV 254 times as "month", 20 times as "new moon", once as "monthly", and once as "another". Codesh is Strong's number 2320 which means the new moon. The root of Codesh is Strong's number 2318 "Cadesh" which means to renew or cause to rebuild. This definition points to the crescent moon because the crescent moon is growing out of the darkness. The full moon is a moon that is completely illuminated. This would be a moon that is not rebuilding but is dying because it has reached its maximum illumination.
"We must strive to be like the moon.' An old man in Kabati repeated this sentence often... the adage served to remind people to always be on their best behavior and to be good to others. [S]he said that people complain when there is too much sun and it gets unbearably hot, and also when it rains too much or when it is cold. But, no one grumbles when the moon shines. Everyone becomes happy and appreciates the moon in their own special way. Children watch their shadows and play in its light, people gather at the square to tell stories and dance through the night. A lot of happy things happen when the moon shines. These are some of the reasons why we should want to be like the moon." ― Ishmael Beah
In the modern system of "traditional" full moon names tied to the solstice and equinox points, a supernumerary full moon in such a period is called a blue moon. The term "blue moon" used in this sense may date to as early as the 16th century, but it became well known in the United States due to the Farmers' Almanac (published since 1818).
Sing! Beat the tambourine. Play the sweet lyre and the harp.  Blow the ram's horn at new moon, and again at full moon to call a festival! Psalm 81, verse 3–4Moon. The moon is a feminine symbol, universally representing the rhythm of time as it embodies the cycle. The phases of the moon symbolize immortality and eternity, enlightenment or the dar k side of Nature herself.
"The moon went slowly down in loveliness; she departed into the depth of the horizon, and long veil-like shadows crept up the sky through which the stars appeared. Soon, however, they too began to pale before a splendour in the east, and the advent of the dawn declared itself in the newborn blue of heaven. Quieter and yet more quiet grew the sea, quiet as the soft mist that brooded on her bosom, and covered up her troubling, as in our tempestuous life the transitory wreaths of sleep brook upon a pain-racked soul, causing it to forget its sorrow. From the east to the west sped those angels of the Dawn, from sea to sea, from mountain-top to mountain-top, scattering light from breast and wing. On they sped out of the darkness, perfect, glorious; on, over the quiet sea, over the low coast-line, and the swamps beyond, and the mountains above them; over those who slept in peace and those who woke in sorrow; over the evil and the good; over the living and the dead; over the wide world and all that breathes or as breathed thereon." ― H. Rider Haggard, She