'Joints' in the Bible

and not holding the head, from which all the body -- through the joints and bands gathering supply, and being knit together -- may increase with the increase of God.

for the reckoning of God is living, and working, and sharp above every two-edged sword, and piercing unto the dividing asunder both of soul and spirit, of joints also and marrow, and a discerner of thoughts and intents of the heart;