That this duty is the outlet of troubles, and the best way the poor Christian hath to ease his heart when surcharged with sorrow. Griefs are eased by groans. Such evaporations disburden and cool the heart, as the opening of a vein in some cases doth. Oh the sensible ease that comes in this way! When grief in the mind, like vapors in the air, are condensed into black clouds that overspread the soul, and darken that beautiful light that once shone there, then prayer, like the sun dispels and scatters them, 1 Sam. 1:18.